Criticism of the Quran

Criticism of the Quran, the religious text held to be sacred by Islam, often concerns the text’s factual accuracy, moral tenability, and supposed inerrancy claimed by ulemas. Muslims regard the Quran as the perfect verbatim word of God revealed to Muhammad.
In critical and historical study, scholars, such as John Wansbrough, Joseph Schacht, Patricia Crone, and Michael Cook, seek to investigate and verify the Quran's origin, text, composition, and history, examining questions, puzzles, difficult text, etc. as they would non-sacred ancient texts. The most common criticisms concern various pre-existing sources that the Quran relies upon, internal consistency, clarity and ethical teachings. According to Toby Lester, many Muslims find not only the religious fault-finding, but also Western scholarly investigation of textual evidence, "disturbing and offensive".

Historical authenticity

Traditional view

According to Islamic tradition, which criticism may question or contradict, the Quran followed a passage from heaven down to the angel Gabriel who revealed it in the seventh century CE over 23 years to a Hejazi Arab trader and shepherd, Muhammad, who became one of the Prophets of Islam.
Muhammad shared these revelations—which brought uncompromising monotheism to humanity—with his companions, who wrote them down and/or memorized them. From these memories and scraps, a standard edition was carefully compiled and edited under the supervision of Caliph Uthman not long after Muhammad's death.
Copies of this codex were sent to the major centers of what was by this time a rapidly expanding empire, and all other incomplete or "imperfect" variants of the Quranic revelation were ordered by Uthman to be destroyed. In the next few centuries, the religion and empire of Islam solidified, and an enormous body of religious literature and laws was developed, including commentaries/exegeses to explain the Quran.
Thus, according to Islamic teaching, it was ensured that the wording of the Quranic text available today corresponds exactly to the literal, infallible, "perfect", "timeless", "absolute", unadulterated word of God revealed to Muhammad. That revelation in turn is identical to an eternal "mother of the book", the archetype of the Quran. In the Muslim religious and theological view, this was not created/written by God, but an attribute of him, co-eternal and kept with him, in heaven.

Muslim views of criticism

For Muslims, the contents of the Quran have been "a source of doctrine, law, poetic and spiritual inspiration, solace, zeal, knowledge, and mystical experience." "Millions and millions" of whom "refer to the Koran daily to explain their actions and to justify their aspirations", and in recent years many consider it the source of scientific knowledge. Revered by pious Muslims as "the holy of holies", whose sound moves some to "tears and ecstasy", it is the physical symbol of the faith. The traditional Muslim understanding of the Quran is not that it is simply divinely inspired, but the literal word of God; the last and complete message from God, from his final messenger superseding the Hebrew Bible and Christian New Testament and purified of "accretions of Judaism and Christianity".
Traditional Islam scholars have developed Quranic studies or "Quranic sciences" over the centuries, following the Quranic encouragement, "Will they not contemplate the Quran?". There are two types of exegesis used to explain and interpret the Quran: tafsir and ta'wil. Other areas studied are ; naskh ; study of "occasions of revelation" ; chronology of revelation; the division of quranic chapters into "Meccan surah" and "Medinan surah. According to Seyyed Hossein Nasr, these traditional religious sciences:

"provide all the answers to questions posed by modern western orientalists about the structure and text of the Koran, except, of course, those questions that issue from the rejection of the Divine Origin of the Koran and its reduction to a work by the prophet. Once the revealed nature of the Koran is rejected, then problems arise. But these are problems of orientalists that arise not from scholarship but from a certain theological and philosophical position that is usually hidden under the guise of rationality and objective scholarship. For Muslims there has never been the need to address these 'problems'..."

In contrast, many of the original non-Muslim scholars of the Quran worked "in the context of an openly declared hostility" between Christianity and Islam, to debunk Islam or proselytize against it. The nineteenth-century orientalist and colonial administrator William Muir wrote that the Quran was one of "the most stubborn enemies of Civilisation, Liberty, and the Truth which the world has yet known."
In the twentieth century, scholars of the early Soviet Union working in the context of dialectical materialism and fighting the "opium of the people" argued that Muhammad and the first Caliphs were "mythical figures" and that "the motive force" of early Islam was "the mercantile bourgeoisie of Mecca and Medina" and "slave-owning" Arab society.
At least in part in reaction, some Muslim opposition to "The Orientalist enterprise of Qur'anic studies" has been intense. In 1987, Muslim critic S. Parvez Manzoor denounced it as conceived in "the polemical marshes of medieval Christianity".

At the greatest hour of his worldly-triumph, the Western man, coordinating the powers of the State, Church and Academia, launched his most determined assault on the citadel of Muslim faith. All the aberrant streaks of his arrogant personality—its reckless rationalism, its world-domineering phantasy and its sectarian fanaticism—joined in an unholy conspiracy to dislodge the Muslim Scripture from its firmly entrenched position as the epitome of historic authenticity and moral unassailability.

In the twenty-first century, some Muslim Islamic scholars have warned against lending "legitimacy to non-Muslim scholars’ understanding about Islam" by engaging with them, and that even a rigorously scholarly academic work on Islam such as the Brill Encyclopedia of Islam "is filled with insults and disparaging remarks about the Qur’an".
Textual criticism of the Quran, the structure and style of the surahs, has been opposed on the grounds that it questions the divine origin of the Quran. Seyyed Hossein Nasr has denounced the “rationalist and agnostic methods of higher criticism” as similar to dissecting and subjecting Jesus to “modern medical techniques” to determine whether he was born miraculously or was the son of Joseph. In his influential Orientalism, Edward Said declared Western study of the Middle East — including the religion of Islam — inextricably tied to Western Imperialism, making the study inherently political and servile to power.
These complaints have been compared to those of other religious conservatives against textual historical criticism of their own sacred text.
Non-Muslim scholar Patricia Crone acknowledges the call for humility towards the sacred of other cultures — "who are you to tamper with their legacy?" — but defends the challenging of orthodox views of Islamic history, saying "we Islamicists are not trying to destroy anyone's faith."
Not all Muslims oppose criticism; Roslan Abdul-Rahim writes that critical study of the Quran "will not hurt the Muslims; it will only help them" because "no amount of criticism can change that fact" that the "Quran is truly a divine piece of work as the Muslim theology stipulates and as the Muslims have so strongly defended". Some scholars have suffered for attempting to apply literary or philological techniques to the Quran, such as Egyptian "Dean of Arabic Literature" Taha Husain, who lost his post at Cairo University in 1931, Egyptian professor Mohammad Ahmad Khalafallah, whose dissertation was rejected, a non-Muslim German professor Günter Lüling, and Egyptian professor Nasr Abu Zaid, who was forced to seek exile in Europe after being declared an apostate and threatened with death for violating a "right of God".

Non-Muslim views

Not all non-Muslim scholars of Islam are interested in critical examination/analysis. Patricia Crone and Ibn Rawandi argue that Western scholarship lost its critical attitude to the sources of the origins of Islam around the time of the First World War." Andrew Rippin has expressed surprise that

for students acquainted with approaches such as source criticism, oral-formulaic composition, literary analysis, and structuralism, all quite commonly employed in the study of Judaism and Christianity, such naive historical study seems to suggest that Islam is being approached with less than academic candor.

Scholars have complained about "'dogmatic Islamophilia' of most Arabists" ; that in one western country "it is no longer acceptable to criticize Islam or the Arab countries" ; that among some historians understanding of Islam "has given way to apologetics pure and simple".
However, in the 1970s, what has been described as a "wave of skeptical scholars" challenged a great deal of the received wisdom in Islamic studies. They argued that the Islamic historical tradition had been greatly corrupted in transmission, that there was a lack of supporting evidence consistent with the traditional narrative, such as the lack of archaeological evidence, and discrepancies with non-Muslim literary sources. They tried to correct or reconstruct the early history of Islam from other, presumably more reliable, sources such as coins, inscriptions, and non-Islamic sources.

Uniform Quran

Although there is some disagreement,
the collection of verses for the compilation of a written Quran is said to have begun under Caliph Abu Bakr.
The last recensions to make an official and uniform Quran in a single dialect were effected under Caliph Uthman starting some twelve years after the Prophet's death and finishing twenty-four years after the effort began, with all other existing personal and individual copies and dialects of the Quran being burned:
It is traditionally believed that the earliest writings had the advantage of being checked by people who already knew the text by heart, for they had learned it at the time of the revelation itself and had subsequently recited it constantly. Since the official compilation was completed two decades after Muhammad's death, the Uthman text has been scrupulously preserved. Bucaille believed that this did not give rise to any problems of the Quran's authenticity.

Qira'at and Ahruf

Despite caliph Uthman's reported work to standardize the Quran, and the belief by many Muslims that it "exists exactly as it had been revealed to the Prophet; not a word - nay, not a dot of it - has been changed", there are not one but ten different recognized versions of recitations of the Quran, known as qiraʼat. These exist because the Quran was originally spread and passed down orally, and though there was a written text, it did not include most vowels or distinguish between many consonants. Consequently, although the differences between the Qira'at are slight and only one version of the ten is in wide use, the differences between the "readings" go beyond pronunciation into consonants and meaning.
In addition to the Qira'at there are also Ahruf—both being readings of the Quran with "unbroken chain of transmission going back to the Prophet", but all but one ahruf allegedly being forgotten after Uthman standardized the Quran. There are multiple views on the nature of the ahruf and how they relate to the qira'at, the general view being that caliph Uthman eliminated all of the ahruf except one during the 7th century CE. The ten qira'at were canonized by Islamic scholars in early centuries of Islam.
Prior to this period, there is evidence that the unpointed text could be read in different ways, with different meanings.
Even after centuries of Islamic scholarship, the variants of the Qira'at have been said to continue "to astound and puzzle" Islamic scholars, and make up "the most difficult topics" in Quranic studies. While in theory Qira'at include differences in consonantal diacritics, vowel marks, but not the consonantal skeleton which should be uniform in all Qira'at, there are differences in, resulting in materially different readings.
Examples of differences between two Qira'at:
;Ḥafṣ ʿan ʿĀṣim and Warš ʿan Nāfiʿ for eight verses:

Ḥafṣ	Warš	verse
يَعْمَلُونَ	تَعْمَلُونَ	Al-Baqara 2:85
مَا نُنَزِّلُ	مَا تَنَزَّلُ	Al-Ḥijr 15:8
لِأَهَبَ	لِيَهَبَ	Maryam 19:19
قَالَ	قُل	Al-Anbiyā' 21:4
كَبِيرًا	كَثِيرًا	Al-Aḥzāb 33:68
فَبِمَا	بِمَا	Al-Shura 42:30
يُدْخِلْهُ	نُدْخِلْهُ	Al-Fatḥ 48:17
عِبَٰدُ	عِندَ	al-Zukhruf 43:19

While the change of voice or pronouns in these verses may seem confusing, it is very common in the Quran and found even in the same verse.

Q.2:85 The "you" in Hafs refers to the actions of more than one person, and the "they" in Warsh is also referring to the actions of more than one person.
Q.15:8 "We" refers to God in Hafs, and the "They" in Warsh refers to what is not being sent down by God.
Q.19:19 is a well-known difference, both for the theological interest in the alternative pronouns said to have been uttered by the angel, and for requiring unusual orthography.
Q.48:17, the "He" in Hafs is referring to God, and the "We" in Warsh is also referring to God; this is due to the fact that God refers to Himself in both the singular form and plural form by using the royal "We".
Q.43:19 shows an example of a consonantal dotting difference that gives a different root word, in this case ʿibādu v. ʿinda.

The second set of [|examples] below compares the other canonical readings with that of Ḥafs ʿan ʿĀṣim. These are not nearly as widely read today, though all are available in print and studied for recitation.
There is a hadith related by Tabarī minimizing confusion over Qira'at or Ahruf. Tabarī prefaces his early commentary on the Quran, illustrating that the precise way to read the verses of the sacred text was not fixed even in the day of the Prophet. Two men disputing a verse in the text asked Ubay ibn Ka'b to mediate, but he disagreed with them and proposed a third reading. To resolve the question, the three went to Muhammad. He asked the first man to read out the verse and announced it was correct. He made the same response when the second alternative reading was delivered. He then asked Ubay to provide his own recital, and, on hearing the third version, Muhammad also pronounced it 'Correct!'. Noting Ubay's perplexity and inner thoughts, Muhammad then told him, 'Pray to God for protection from the accursed Satan.'

Extant copies prior to Uthman version

Sanaa manuscript

In 1972, a cache of 12,000 ancient Quranic parchment fragments was discovered in a mosque in Sana'a, Yemen – commonly known as the Sana'a manuscripts.
Of the fragments, all except 1500–2000 were assigned to 926 distinct Quranic manuscripts as of 1997.
The manuscript is a palimpsest and comprises two layers of text, both written in the Hijazi script. The upper text largely conforms to the standard 'Uthmanic' Quran in text and in the standard order of chapters, whereas the lower text contains many variations from the standard Uthmanic text, and the sequence of its chapters corresponds to no known Quranic order.
For example, in Surah 2, verse 87, the lower text has wa-qaffaynā 'alā āthārihi whereas the standard text has wa-qaffaynā min ba'dihi. The Sana'a manuscript has exactly the same verses and the same order of verses as the standard Quran. The order of the suras in the Sana'a codex is different from the order in the standard Quran. Such variants are similar to the ones reported for the Quran codices of Companions such as Ibn Masud and Ubay ibn Ka'b. However, variants occur much more frequently in the Sana'a codex, which contains "by a rough estimate perhaps twenty-five times as many ".
On the basis of studies of the trove of Quranic manuscripts discovered in Sana'a, Gerd R. Puin concluded that the Quran as we have it is a 'cocktail of texts', some perhaps preceding Muhammad's day, and that the text as we have it evolved. However, other scholars, such as Asma Hilali presumed that the San'aa palimpsest seems to be written down by a learning scribe as a form of "exercise" in the context of a "school exercise", which explains a potential reason of variations in this text from the standard Quran Mushafs available today. Another way to explain these variations is that San'aa manuscript may have been part of a surviving copy of Quranic Mus'haf which escaped the 3rd caliph Uthman's attempt to destroy all the dialects of Quran except the Quraishi one.

Birmingham/Paris manuscript

The early Arabic script transcribed 28 consonants, of which only 6 can be readily distinguished; the remaining 22 share formal similarities, so the specific consonant intended can only be determined by context. It was only with the introduction of Arabic diacritics some centuries later that an authorized vocalization of the text and how it was to be read were established and became canonical.
In 2015, the University of Birmingham disclosed that scientific tests may show a Quran manuscript in its collection to be one of the oldest known, and that it was believed to have been written close to the time of Muhammad. The findings in 2015 of the Birmingham Manuscripts led Joseph E. B. Lumbard, Assistant Professor of Classical Islam, Brandeis University, to comment:
Tests by the Oxford Radiocarbon Accelerator Unit indicated with a probability of more than 94 percent that the parchment dated from 568 to 645. Dr Saud al-Sarhan, Director of Center for Research and Islamic Studies in Riyadh, questions whether the parchment might have been reused as a palimpsest, and also noted that the writing had chapter separators and dotted verse endings – features in Arabic scripts which are believed not to have been introduced to the Quran until later. Al-Sarhan's criticisms were supported by several Saudi-based experts in Quranic history, who said that the Birmingham/Paris Quran could not have been written during the lifetime of Muhammad. They said that, while Muhammad was alive, Quranic texts were written without chapter divisions, verse markers, or coloured inks, and did not follow any standard sequence of surahs. They said that those features were introduced into Quranic practice in the time of the Caliph Uthman, and so the Birmingham leaves could have been written later, but not earlier.
Professor Süleyman Berk of the faculty of Islamic studies at Yalova University said there is a strong similarity between the script of the Birmingham leaves and those of a number of Hijazi Qurans in the Turkish and Islamic Arts Museum, which were brought to Istanbul from the Great Mosque of Damascus following a fire in 1893. Berk said that these manuscripts had been intensively researched in association with an exhibition on the history of the Quran, The Quran in its 1,400th Year held in Istanbul in 2010, and the findings published by François Déroche as Qur'ans of the Umayyads in 2013. In that study, the Paris Quran, BnF Arabe 328(c), is compared with Qurans in Istanbul, and concluded as having been written "around the end of the seventh century and the beginning of the eighth century."
In December 2015, François Déroche of the Collège de France said the two Birmingham leaves were those of the Paris Qur'an BnF Arabe 328, as had been proposed by Alba Fedeli. Deroche expressed reservations about the reliability of the radiocarbon dates proposed for the Birmingham leaves, noting instances elsewhere in which radiocarbon dating had proved inaccurate in testing Qurans with an explicit endowment date, and also that none of the counterpart Paris leaves had yet been carbon-dated. Jamal bin Huwaireb, managing director of the Mohammed bin Rashid Al Maktoum Foundation, has proposed that, were the radiocarbon dates to be confirmed, the Birmingham/Paris Qur'an might be identified with the text known to have been assembled by the first Caliph, Abu Bakr, between 632 and 634 CE.

Further research and findings

Critical research of historic events and timeliness of eyewitness accounts reveal the effort of later traditionalists to consciously promote, for nationalistic purposes, the centrist concept of Mecca and prophetic descent from Ismail, in order to grant a Hijazi orientation to the emerging religious identity of Islam:
In their book 1977 Hagarism: The Making of the Islamic World, written before more recent discoveries of early Quranic material, Patricia Crone and Michael Cook challenge the traditional account of how the Quran was compiled, writing that "there is no hard evidence for the existence of the Koran in any form before the last decade of the seventh century." Crone, Wansbrough, and Nevo argued, that all the primary sources which exist are from 150 to 300 years after the events which they describe, and thus are chronologically far removed from those events.
It is generally acknowledged that the work of Crone and Cook represented a fresh approach to the reconstruction of early Islamic history, but the theory has been almost universally rejected. Van Ess has dismissed it stating that "a refutation is perhaps unnecessary since the authors make no effort to prove it in detail... Where they are only giving a new interpretation of well-known facts, this is not decisive. But where the accepted facts are consciously put upside down, their approach is disastrous." R. B. Serjeant states that "... is not only bitterly anti-Islamic in tone, but anti-Arabian. Its superficial fancies are so ridiculous that at first one wonders if it is just a 'leg pull', pure 'spoof'." Francis Edward Peters states that "Few have failed to be convinced that what is in our copy of the Quran is, in fact, what Muhammad taught, and is expressed in his own words".
In 2006, legal scholar Liaquat Ali Khan claimed that Crone and Cook later explicitly disavowed their earlier book. Patricia Crone in an article published in 2006 provided an update on the evolution of her conceptions since the printing of the thesis in 1976. In the article, she acknowledges that Muhammad existed as a historical figure and that the Quran represents "utterances" of his that he believed were revelations. However, she states that the Quran may not be the complete record of the revelations. She also accepts that oral histories and Muslim historical accounts cannot be totally discounted, but remains skeptical about the traditional account of the Hijrah and the standard view that Muhammad and his tribe were based in Mecca. She describes the difficulty in handling the hadith because of their "amorphous nature" and their purpose as documentary evidence for deriving religious law rather than as historical narratives.
The author of the Apology of al-Kindy Abd al-Masih ibn Ishaq al-Kindi claimed that the narratives in the Quran were "all jumbled together and intermingled" and that this was "an evidence that many different hands have been at work therein, and caused discrepancies, adding or cutting out whatever they liked or disliked". Bell and Watt suggested that the variation in writing style throughout the Quran, which sometimes involves the use of rhyming, may have indicated revisions to the text during its compilation. They claimed that there were "abrupt changes in the length of verses; sudden changes of the dramatic situation, with changes of pronoun from singular to plural, from second to third person, and so on". At the same time, however, they noted that "f any great changes by way of addition, suppression or alteration had been made, controversy would almost certainly have arisen; but of that there is little trace." They also note that "Modern study of the Quran has not in fact raised any serious question of its authenticity. The style varies, but is almost unmistakable."

Questions about history and origins

Questions about the text

The Quran itself states that its revelations are themselves "miraculous 'signs—inimitable in their eloquence and perfection
and proof of the authenticity of Muhammad's prophethood.
Several verses remark on how the verses of the book set clear or make things clear, and are in "pure and clear" Arabic language
At the same time, some verses of the Quran have been abrogated by others and these and other verses have sometimes been revealed in response or answer to questions by followers or opponents.
Not all early Muslims agreed with this consensus. Muslim-turned-skeptic Ibn al-Rawandi dismissed the Quran as "not the speech of someone with wisdom, contain contradictions, errors and absurdities".
In response to claims that the Quran is a miracle, 10th-century physician and polymath Muhammad ibn Zakariya al-Razi wrote,

You claim that the evidentiary miracle is present and available, namely, the Koran. You say: "Whoever denies it, let him produce a similar one." Indeed, we shall produce a thousand similar, from the works of rhetoricians, eloquent speakers and valiant poets, which are more appropriately phrased and state the issues more succinctly. They convey the meaning better and their rhymed prose is in better meter.... By God what you say astonishes us! You are talking about a work which recounts ancient myths, and which at the same time is full of contradictions and does not contain any useful information or explanation. Then you say: "Produce something like it"?!

Early Western scholars also often attacked the literary merit of the Quran.
Orientalist Thomas Carlyle, called the Quran "toilsome reading and a wearisome confused jumble, crude, incondite" with "endless iterations, long-windedness, entanglement" and "insupportable stupidity". Salomon Reinach wrote that this book warrants "little merit... from a literary point of view".
More specifically, "peculiarities" in the text have been alleged.
Iranian rationalist and scholar Ali Dashti points out that before its perfection became an issue of Islamic doctrine, early Muslim scholar Ibrahim an-Nazzam "openly acknowledged that the arrangement and syntax" of the Quran was less than "miraculous".
Ali Dashti states that "more than one hundred" aberrations from "the normal rules and structure of Arabic have been noted" in the Quran.

sentences which are incomplete and not fully intelligible without the aid or commentaries; foreign words, unfamiliar Arabic words, and words used with other than the normal meaning; adjectives and verbs inflected without observance of the concords of gender and number; illogically and ungrammatically applied pronouns which sometimes have no referent; and predicates which in rhymed passages are often remote from the subjects.

Scholar Gerd R. Puin puts the number of unclear verses much higher:

The Koran claims for itself that it is 'mubeen,' or 'clear,' but if you look at it, you will notice that every fifth sentence or so simply doesn't make sense. Many Muslims—and Orientalists—will tell you otherwise, of course, but the fact is that a fifth of the Koranic text is just incomprehensible. This is what has caused the traditional anxiety regarding translation. If the Koran is not comprehensible—if it can't even be understood in Arabic—then it's not translatable. People fear that. And since the Koran claims repeatedly to be clear but obviously is not—as even speakers of Arabic will tell you—there is a contradiction. Something else must be going on.

Scholar of the Semitic languages Theodor Noldeke collected a large quantity of morphological and syntactic grammatical forms in the Quran that "do not enter into the general linguistic system of Arabic".
Alan Dundes points out the Quran itself denies that there can be errors within it, "If it were from other than Allah, they would surely have found in it many contradictions".

Obscure words and phrases

The Quran "sometimes makes dramatic shifts in style, voice, and subject matter from verse to verse, and it assumes a familiarity with language, stories, and events that seem to have been lost even to the earliest of Muslim exegetes", according to journalist and scholar Toby Lester.
The Quran is known to contain a number of words the meaning of which is not clear and for which Muslim commentators have created "a welter of competing guesses".

qaḍb possible meaning "green herbs" of some kind.
ʿābb, possible meaning "pasture"
Jibt, "no explanation has been found" guesses include "idol or priest or sorcerer, or sorcery, or satan, or what not".
Ghislīn, unknown. guess: "what exudes from the bodies of the inmates" of Hell.
Iram, unknown. foreign word, possibly a name of city or country.
Qurbān, evidently means "sacrifice", but maybe "favorites of a prince" or then again "a means of access to God"
ṣābiʿīn, literally "the baptizers", but does not make sense in that context.
abābīl
sijjīl
samad
kalāla
an yadin usually translated as "out of hand" as a means of payment, but what this means has not been agreed upon.
ar-raqim guesses by exegetes include "books", "inscription", "tablet", "rock", "numbers", or "building", or a proper name for "a village, or a valley, a mountain, or even a dog".

Michael Cook argues that there may be more obscure words than has been recognized.

: "For the accustomed security of the Quraysh - Their accustomed security the caravan of winter and summer",

Contains the word ilaf—interpreted to mean arrangements with local tribes for protection ; and the word rihla—thought to mean the caravan journey. According to hadith, the foundation of Mecca's trade were two annual commercial caravans by the Quraysh tribe from Mecca to Yemen and back in the winter and another to Syria in the summer. But the Arabic word rihla simply means journey, not commercial travel or caravan; and there was uncertainty among commentators as to how to read the vowels in ilaf or how the term was defined. Consequently, Cook wonders if is a brief mention of Mecca's basic commerce or if the hadith about the two caravans was made up to explain Quranic passages whose meaning was otherwise unclear.
Explanations include that God is "making the point that He knows something we don't", or that in some cases the words are used to rhyme a verse.."

Arabic words

Several verses—Q.16:103, 12:2, and 42:7 -- state the Quran is revealed in Arabic, pure and clear.
However the scholar al-Suyuti enumerated 107 foreign words in the Quran, and Arthur Jeffery found about 275 words that are of Aramaic, Hebrew, Syriac, Ethiopic, Persian, and Greek origin according to Ibn Warraq. Andrew Rippin states that not only Orientalists but medieval Arabs admitted the Quran contained foreign words. Al-Jawālīqī, a 12th-century Arab grammarian, spoke of "'foreign words found in the speech of the ancient Arabs and employed in the Quran' without any cautious restrictions."
Defending against these charges, Ansar Al 'Adl of "call to monotheism" states that "pure Arabic" actually really refers to the "clarity and eloquence" of the Arabic language in the Quran, and that the foreign words "had actually been naturalized and become regular Arabic words before they came to be used in the Qur'an"

"Mystery letters"

Another mystery is why about one quarter of surahs of the Quran begin with a group of between one and five letters that do not form words. These are known as Muqattaʿat :

Alif Lam Ra – Q. 10, 11, 12, 14, 15.
Alif Lam Mim – Q. 2, 3, 29, 30, 31, 32.
Alif Lam Mim Ra – Q. 13.
Alif Lam Mim Sad – Q. 7.
Ha Mim – Q. 40, 41, 43, 44, 45, 46.
Ha Mim ‘Ain Sin Qaf – Q. 42.
Sad – Q. 38.
Ta Sin – Q. 27.
Ta Sin Mim – Q. 26, 28.
Ta Ha – Q. 20.
Qaf – Q. 50.
Ka Ha Ya 'Ain Sad – Q. 19.
Nun – Q. 68.
Ya Sin – Q. 36.

According to the Muslim translator and expositor Muhammad Asad:

"The significance of these letter-symbols has perplexed the commentators from the earliest times. There is no evidence of the Prophet's having ever referred to them in any of his recorded utterances, nor any of his Companions having ever asked him for an explanation. None the less, it is established beyond any possibility of doubt that all the Companions - obviously following the example of the Prophet - regarded the muqatta'at as integral parts of the suras to which they are prefixed, and used to recite them accordingly: a fact which disposes effectively of the suggestion advanced by some Western orientalists that these letters may be no more than the initials of the scribes who wrote down the individual revelations at the Prophet's dictation, or of the Companions who recorded them at the time of the final codification of the Qur'an during the reign of the first three Caliphs.
"Some of the Companions as well as some of their immediate successors and later Qur'anic commentators were convinced that these letters are abbreviations of certain words or even phrases relating to God and His attributes, and tried to 'reconstruct' them with much ingenuity; but since the possible combinations are practically unlimited, all such interpretations are highly arbitrary and, therefore, devoid of any real usefulness …"

Asad quotes Abu Bakr as saying : ‘In every divine writ there is mystery - and the mystery of the Qur'an is in the openings of the suras.’"

Mystery religion

The Quran mentions the "Jews, Christians, and Ṣābiʼūn" three times. But while the identity of the first two religions is/was widely known among Muslims and non-Muslims, the Ṣābiʼūn was not

Narrative voice: Mohammed or God as speakers

Since the Quran is God's revelation to humanity, critics have wondered why in many verses, God is being addressed by humans, instead of Him addressing human beings. Or as scholars Richard Bell and W. Montgomery Watt point out, while it is not unheard of for someone
Folklorist Alan Dundes notes how one "formula" or phrase is repeated with a variety of voices both divine and human, singular and plural:

`Our Lord, forgive Thou our sins and acquit us of our evil deeds` ;
`We will acquit you of your evil deeds`, ;
`I will acquit you of your evil deeds`, ;
`He will acquit them of their evil deeds`, ;
`Allah will acquit him of his evil deeds`, ;

The point-of-view of God changes from third person, to first person, and back again to third all in the same verse. Q.33:37 also starts by referring to God in the third person, is followed by a sentence with God speaking in first person before returning to third person. Again in God is both first and third person within one sentence.
The Jewish Encyclopedia, for example, writes: "For example, critics note that a sentence in which something is said concerning Allah is sometimes followed immediately by another in which Allah is the speaker Many peculiarities in the positions of words are due to the necessities of rhyme." The verse starts out with Muhammad talking in first person and switches to third.Shall I seek other than Allah for judge, when He it is Who hath revealed unto you Scripture, fully explained? Those unto whom We gave the Scripture know that it is revealed from thy Lord in truth. So be not thou of the waverers.
While some have argued that "such grammatical shifts are a traditional aspect of Arabic rhetorical style", Ali Dashti notes that in many verses "the speaker cannot have been God". The opening surah Al-Fatiha which contains such lines as

Praise to God, the Lord of the Worlds,...
You we worship and from You we seek help....

is "clearly addressed to God, in the form of a prayer." Other verses also makes no sense as a statement of an all-powerful God.
Many verses in the Quran where God is addressed in the third person are preceded by the imperative "say/recite!" -- but it does not occur in Al-Fatiha and many other similar verses. Sometimes the problem is resolved in translations of the Quran by the translators adding "Say!" in front of the verse.
Dashti notes that in at least one verse

-- Exalted is He who took His Servant by night from al-Masjid al-Haram to al-Masjid al-Aqsa, whose surroundings We have blessed, to show him of Our signs. Indeed, He is the Hearing, the Seeing.

This feature did not escape the notice of some early Muslims.
Ibn Masud — one of the companions of Muhammad who served as a scribe for divine revelations received by Muhammad and is considered a reliable transmitter of ahadith — did not believe that Surah Fatihah to be a genuine part of the Quran. He was not alone, other companions of Muhammad disagreed over which surahs were part of the Quran and which not. A verse of the Quran itself seems to distinguish between Fatihah and the Quran:

-- And we have given you seven often repeated verses and the great Quran.

Al-Suyuti, the noted medieval philologist and commentator of the Quran thought five verses had questionable "attribution to God" and were likely spoken by either Muhammad or Gabriel.
Cases where the speaker is swearing an oath by God, such as surahs 75:1–2 and 90:1, have been made a point of criticism. But according to Richard Bell, this was probably a traditional formula, and Montgomery Watt compared such verses to. It is also widely acknowledged that the first-person plural pronoun in Surah 19:64 refers to angels, describing their being sent by God down to Earth. Bell and Watt suggest that this attribution to angels can be extended to interpret certain verses where the speaker is not clear.
;Spelling, syntax and grammar
In 2020, a Saudi news website published an article claiming that while most Muslims believe the text established by third caliph 'Uthman bin 'Affan "is sacred and must not be amended", there are some 2500 "errors of spelling, syntax and grammar" within it. The author argues that while the recitation of the Quran is divine, the Quranic script established by Uthman's "is a human invention" subject to error and correction. Examples of some of the errors he gives are:

Surah 68, verse 6, بِأَيِّيكُمُ appears, instead of بأيكم. In other words, an extra ي was added.
Surah 25, verse 4, جَآءُو appears, instead of جَاءُوا or جاؤوا. In other words, the alif in the plural masculine suffix وا is missing.
Surah 28, verse 9, the word امرأت appears, instead of امرأة.

;Phrases, sentences or verse that seem out of place and were likely to have been transposed.
An example of an out-of-place verse fragment is found in Surah 24 where the beginning of a verse — "There is not upon the blind constraint nor upon the lame constraint nor upon the ill constraint..." — is located in the midst of a section describing proper behavior for visiting relations and modesty for women and children . While it makes little sense here, the exact same phrases appears in another surah section where it does fit in as list of those exempt from blame and hellfire if they do not fight in a jihad military campaign.
Theodor Nöldeke complains that "many sentences begin with a 'when' or 'on the day when' which seems to hover in the air, so that commentators are driven to supply a 'think of this' or some such ellipsis." Similarly, describing a "rough edge" of the Quran, Michael Cook notes that verse Q.33:37 starts out with a "long and quite complicated subordinate clause", "but we never learn what the clause is subordinate to."

Reply

A common reply to questions about difficulties or obscurities in the Quran is verse 3:7 which unlike other verses that simply state that the Quran is clear states that some verses are clear but others are "ambiguous".It is He who sent down upon thee the Book, wherein are verses clear that are the Essence of the Book, and others ambiguous. As for those in whose hearts is swerving, they follow the ambiguous part, desiring dissension, and desiring its interpretation; and none knows its interpretation, save only God. And those firmly rooted in knowledge say, 'We believe in it; all is from our Lord'; yet none remembers, but men possessed of minds.
In regards to questions about the narrative voice, Al-Zarkashi asserts that "moving from one style to another serves to make speech flow more smoothly", but also that by mixing up pronouns the Quran prevents the "boredom" that a more logical, straight forward narrative induces; it keeps the reader on their toes, helping "the listener to focus, renew his interest", providing "freshness and variety". "Muslim specialists" refer to the practice as iltifāt,. Western scholar Neal Robinson provides a more detailed reasons as to why these are not "imperfections", but instead should be "prized": changing the voice from "they" to "we" provides a "shock effect", third person makes God "seem distant and transcendent", first person plural "emphasizes His majesty and power", first person singular "introduces a note of intimacy or immediacy", and so on.

Preexisting sources

Similarities with Jewish and Christian Narratives

In dealing with the question of the origins of the Quran, non-Muslim historians have often focused on Christian and Jewish sources.
The Quran contains references to more than fifty people and events also found in the Bible. Moses, is mentioned 135 times
Moses is mentioned in 502 verses in 36 surahs, Abraham in 245 verses, Noah in 131.
Legends, parables or pieces of folklore that appear in the Quran, with similar motifs to Jewish traditions include Cain and Abel, Abraham destroying idols, Solomon conversing with a talking ant. Christian traditions include the Seven Sleepers, the naming of Mary, mother of Jesus, the selection of Mary's guardian by lottery, how a palm tree obeyed the commands of the child Jesus.
The Quran and Bible differ on a number of narrative and theological issues. There is no original sin in the Quran; it specifically and repeatedly denies the Christian Trinity of three persons in one God, and denies that Jesus is the son of God, was crucified and died, or rose from the dead. It holds that the Holy Spirit is actually the angel Gabriel. The Devil, Satan, is regarded as a jinn not a fallen angel in most contemporary scholarship.
Muslims believe the Quran refers to figures, prophets, and events in the Hebrew Bible and the Christian New Testament because these books are predecessors of the Quran, also revealed by the one true omnipotent God. The differences between these books and the Quran can be explained by the flawed processes of transmission and interpretation, distorting revelation that the Quran provides free from any distortions and corruptions.
Non-Muslim historians – secular but also Jewish and Christian – in keeping with Occam's razor, have looked for simpler, non-divine/non-supernatural explanations for the connection. Many stories of Muhammad hearing about Christianity from Christians and Judaism from Jews come from Muslim sources.
Western academic scholars who have studied "the relationship between the Quran and the Judeo-Christian scriptural tradition" include Abraham Geiger, Tor Andræ, Richard Bell, and Charles Cutler Torrey.
;Jewish influence
In the 19th century, Abraham Geiger argued for Jewish influence on the formation of the Quran, as did C. C. Torrey even more forcefully in the early 20th Century. Micheal Cook believes Muhammad "owed more to Judaism than to Christianity", and mentions a "fusion" of Jewish-based "monotheism with Arab identity" in Palestine prior to Islam. According to a fifth-century Christian writer — Sozomen — some "Saracen" tribes rediscovered their "Ishmaelite descent" after coming into contact with Jews and had adopted Jewish laws and customs. Although there is no evidence to show "a direct link" between these Arabs and Muhammad, it is a milieu where Quranic material could "have come into existence" before Muhammad.
Several narratives rely on Jewish Midrash Tanhuma legends, like the narrative of Cain learning to bury the body of Abel in Surah 5:31. Critics, like Norman Geisler argue that the dependence of the Quran on preexisting sources is one evidence of a purely human origin.
In their book Hagarism, Michael Cook and Patricia Crone postulate that a number of features of Islam may have been borrowed from the Jewish breakaway sect of Samaritanism: "the idea of a scripture limited to the Pentateuch, a prophet like Moses, a holy book revealed like the Torah, a sacred city with a nearby mountain and shrine of an appropriate patriarch, plus a caliphate modeled on an Aaronid priesthood." Ibn Warraq compares the similarities of Muhammad of Islam and Moses of the Jews. Both bearers of revelation, both receiving revelation on a mountain, leading their people to escape persecution.
According to the Jewish Encyclopedia, "The dependence of Mohammed upon his Jewish teachers or upon what he heard of the Jewish Haggadah and Jewish practices is now generally conceded." Early jurists and theologians of Islam mentioned some Jewish influence but they also say where it is seen and recognized as such, it is perceived as a debasement or a dilution of the authentic message. Bernard Lewis describes this as "something like what in Christian history was called a Judaizing heresy."
According to Professor Moshe Sharon, specialist in Arabic epigraphy, the legends about Muhammad having ten Jewish teachers developed in the 10th century CE:
;Christian
Tor Andræ, saw Christian "Nestorians of Yemen, monophysites of Ethiopia and especially... Syrian pietism" influencing Islam". Richard Carrier regards the reliance on pre-Islamic Christian sources as evidence that Islam derived from a heretical sect of Christianity.
Scholar Oddbjørn Leirvik states "The Qur'an and Hadith have been clearly influenced by the non-canonical Christianity that prevailed in the Arab peninsula and further in Abyssinia" prior to Islam. H.A.R. Gibb states that many of the details in the description of Judgement Day, Heaven, and Hell and some vocabulary "are closely paralleled in the writings of the Syriac Christian fathers and monks."
British author Tom Holland thinks it notable that some doctrines that the Quran mentions in association with Christianity - e.g. that Jesus did not die on the cross ; that he was a mortal man and not divine ; and that the mother of Jesus is divine - come not only from minority Christian sects, but ones that had not enjoyed prominence for some time by the 7th century CE, when the Quran was revealed.

Influence of heretical Christian sects

Death of Jesus

The Quran maintains that Jesus was not actually crucified and did not die on the cross. The general Islamic view supporting the denial of crucifixion may have been influenced by Manichaeism, which holds that someone else was crucified instead of Jesus, while concluding that Jesus will return during the end times. However, the general consensus is that Manichaeism was not prevalent in Mecca during the 6th and 7th centuries when Islam developed.
Despite these views and no eyewitness accounts, most modern scholars have maintained that the Crucifixion of Jesus is indisputable.
The view that Jesus only appeared to be crucified and did not actually die predates Islam, and is found in several apocryphal gospels.
Irenaeus in his book Against Heresies describes Gnostic beliefs that bear remarkable resemblance with the Islamic view:
A Gnostic writing, found in the Nag Hammadi library, Second Treatise of the Great Seth has a similar view of Jesus' death:
and also:
Coptic Apocalypse of Peter, likewise, reveals the same views of Jesus' death:

Mother Mary

The Collyridians, an early Christian heretical sect in pre-Islamic Arabia, whose adherents apparently worshipped Mary, mother of Jesus, as a goddess, have garnered interest in some recent Christian–Muslim religious discussions in reference to the Islamic concept of the Christian Trinity. The debate hinges on some verses in the Qur'an, primarily,, and in the sura Al-Ma'ida, which have been taken to imply that Muhammad believed Christians considered Mary to be part of the Trinity. That idea has never been part of mainstream Christian doctrine and is not clearly and unambiguously attested among any ancient Christian group, including the Collyridians.

Contradictions and abrogation

The Quran contains divine commands or policies that are ignored in Islamic law, including Q24:2, which prescribes a penalty of "100 lashes" for zina, while sharia law—based on hadith of Muhammad—orders adulterers to be stoned to death, not lashed.
This seeming disregard of the founding work of revelation of Islam has been explained by the concept of abrogation, whereby God sometimes abrogates one revelation with another—not only in the Quran but also among hadith. Naskh also holds that are Islamic laws based on verses once part of the Quran but no longer found in present-day Mus'haf, which is the case with the stoning penalty for adultery.
A number of verses mention the issue of abrogation, the central one being:

: "We do not abrogate a verse or cause it to be forgotten except that We bring forth better than it or similar to it. Do you not know that Allah is over all things competent?"

Besides, some other examples of naskh cited by scholars are:

, which allows but discourages Muslims from drinking alcohol;, which forbids Muslims from praying while drunk, and which commands Muslims not to drink alcohol. These seeming contradictory commands are explained by the first verse being abrogated by the second, and the second by the last, as part of a gradual process of weaning early Muslims from alcohol consumption.
The revelation of a verse criticizing Muslim slackers in the waging of jihad, prompted a blind Muslim to protest that his lack of vision prevented him from fighting. "Almost instantaneously" a revelation was sent down partially abrogating the earlier one by adding the qualifier "except the disabled".
tells Muslim warriors, "If there be of you twenty patient believers, they will overcome two hundred" enemy. It is thought to be abrogated by which lowers the number of enemies each Muslim warrior is expected to overcome in battle from ten to only two: "Now God has alleviated your burden, knowing that there is weakness in you. If there should be of you one hundred, they will overcome two hundred;.
Verses such as urging followers to "turn away" from mocking unbelievers "and say, 'Peace, when Muslims were few in number, were replaced with the "Sword verse" commanding "Fight those who not believe in Allah and not in the Day the Last... ", as Muhammad's followers grew stronger.

Among the criticisms made of the concept of abrogation is that it was developed to "remove" contradictions found in the Quran, which "abounds in repetitions and contradictions, which are not removed by the convenient theory of abrogation" ; that it "poses a difficult theological problem" because it seems to suggest God was changing His mind, or has realized something He was unaware of when revealing the original verse, which is logically absurd for an eternally all-knowing deity ; and that it is suspiciously similar to the human process of "revising... past decisions or plans" after "learning from experience and recognising mistakes".
Muslim scholars such as Muhammad Husayn Tabatabaei argue abrogation in Quranic verses is not an indication of contradiction but of addition and supplementation. An example of the mention of impermanent commands in the Quran is Q.2:109 where — according to Tabatabaei — it clearly states the forgiveness is not permanent and soon there will be another command on this subject that completes the matter. Verse Q.4:15 also indicates its temporariness.
The question of why a perfect and unchangeable divine revelation would need to be abrogated, however, has led other scholars to interpret verse Q.2:106 differently than the mainstream. Ghulam Ahmed Parwez in his Exposition of the Quran writes that the abrogation Q.2:106 refers to is of the Bible/Torah, not the Quran:

Satanic verses

Some criticism of the Quran has revolved around two verses known as the "Satanic Verses". Some early Islamic histories recount that as Muhammad was reciting Sūra Al-Najm, as revealed to him by the angel Gabriel, Satan deceived him to utter the following lines after verses 19 and 20: "Have you thought of Al-lāt and al-'Uzzā and Manāt the third, the other; These are the exalted Gharaniq, whose intercession is hoped for." The Allāt, al-'Uzzā and Manāt were three goddesses worshiped by the Meccans. These histories then say that these 'Satanic Verses' were repudiated shortly afterward by Muhammad at the behest of Gabriel.
There are numerous accounts reporting the alleged incident, which differ in the construction and detail of the narrative, but they may be broadly collated to produce a basic account.
The different versions of the story are all traceable to one single narrator Muhammad ibn Ka'b, who was two generations removed from biographer Ibn Ishaq. In its essential form, the story reports that Muhammad longed to convert his kinsmen and neighbors of Mecca to Islam. As he was reciting Sūra an-Najm, considered a revelation by the angel Gabriel, Satan tempted him to utter the following lines after verses 19 and 20:

Have ye thought upon Al-Lat and Al-'Uzzá

and Manāt, the third, the other?
These are the exalted gharāniq, whose intercession is hoped for.

Allāt, al-'Uzzā and Manāt were three goddesses worshipped by the Meccans. Discerning the meaning of "gharāniq" is difficult, as it is a hapax legomenon. Commentators wrote that it meant the cranes. The Arabic word does generally mean a "crane" – appearing in the singular as ghirnīq, ghurnūq, ghirnawq and ghurnayq, and the word has cousin forms in other words for birds, including "raven, crow" and "eagle".
The subtext to the event is that Muhammad was backing away from his otherwise uncompromising monotheism by saying that these goddesses were real and their intercession effective. The Meccans were overjoyed to hear this and joined Muhammad in ritual prostration at the end of the sūrah. The Meccan refugees who had fled to Abyssinia heard of the end of persecution and started to return home. Islamic tradition holds that Gabriel chastised Muhammad for adulterating the revelation, at which point is revealed to comfort him,
Muhammad took back his words and the persecution of the Meccans resumed. Verses were given, in which the goddesses are belittled. The passage in question, from 53:19, reads:

Have ye thought upon Al-Lat and Al-'Uzza

And Manat, the third, the other?

Are yours the males and His the females?

That indeed were an unfair division!

They are but names which ye have named, ye and your fathers, for which Allah hath revealed no warrant. They follow but a guess and that which themselves desire. And now the guidance from their Lord hath come unto them.

The incident of the Satanic Verses is put forward by some critics as evidence of the Quran's origins as a human work of Muhammad. Maxime Rodinson describes this as a conscious attempt to achieve a consensus with pagan Arabs, which was then consciously rejected as incompatible with Muhammad's attempts to answer the criticism of contemporary Arab Jews and Christians, linking it with the moment at which Muhammad felt able to adopt a "hostile attitude" towards the pagan Arabs. Rodinson writes that the story of the Satanic Verses is unlikely to be false because it was "one incident, in fact, which may be reasonably accepted as true because the makers of Muslim tradition would not have invented a story with such damaging implications for the revelation as a whole". In a caveat to his acceptance of the incident, William Montgomery Watt, states: "Thus it was not for any worldly motive that Muhammad eventually turned down the offer of the Meccans, but for a genuinely religious reason; not for example, because he could not trust these men nor because any personal ambition would remain unsatisfied, but because acknowledgment of the goddesses would lead to the failure of the cause, of the mission he had been given by God." Academic scholars such as William Montgomery Watt and Alfred Guillaume argued for its authenticity based upon the implausibility of Muslims fabricating a story so unflattering to their prophet. Watt says that "the story is so strange that it must be true in essentials." On the other hand, John Burton rejected the tradition.
In an inverted culmination of Watt's approach, Burton argued the narrative of the "satanic verses" was forged, based upon a demonstration of its actual utility to certain elements of the Muslim community – namely, those elite sections of society seeking an "occasion of revelation" for eradicatory modes of abrogation. Burton's argument is that such stories served the vested interests of the status quo, allowing them to dilute the radical messages of the Quran. The rulers used such narratives to build their own set of laws which contradicted the Quran, and justified it by arguing that not all of the Quran is binding on Muslims. Burton also sides with Leone Caetani, who wrote that the story of the "satanic verses" should be rejected not only on the basis of isnad, but because "had these hadiths even a degree of historical basis, Muhammad's reported conduct on this occasion would have given the lie to the whole of his previous prophetic activity." Eerik Dickinson also pointed out that the Quran's challenge to its opponents to prove any inconsistency in its content was pronounced in a hostile environment, also indicating that such an incident did not occur or it would have greatly damaged the Muslims.

Intended audience

Some verses of the Quran are assumed to be directed towards all of Muhammad's followers while other verses are directed more specifically towards Muhammad and his wives, yet others are directed towards the whole of humanity
.
Other scholars argue that variances in the Quran's explicitly intended audience are irrelevant to claims of divine origin – and, for example, that Muhammad's wives "specific divine guidance, occasioned by their proximity to the Prophet " where "Numerous divine reprimands addressed to Muhammad's wives in the Quran establish their special responsibility to overcome their human frailties and ensure their individual worthiness", or argue that the Quran must be interpreted on more than one level.

Jurisprudence

British-German professor of Arabic and Islam Joseph Schacht, in his work The Origins of Muhammadan Jurisprudence, regarding the subject of law derived from the Quran, wrote:
Schacht further states that every legal tradition from Muhammad must be taken as an inauthentic and fictitious expression of a legal doctrine formulated at a later date:
What is evident regarding the compilation of the Quran is the disagreement between the companions of Muhammad, as evidenced by their several disagreements regarding interpretation and particular versions of the Quran and their interpretative Hadith and Sunna, namely the mutawatir mushaf having come into present form after Muhammad's death. John Burton's work The Collection of the Quran further explores how certain Quranic texts were altered to adjust interpretation, in regards to controversy between fiqh and madhahib.

Science in the Quran

Some scientists among Muslim commentators, notably al-Biruni, assigned to the Quran a separate and autonomous realm of its own and held that the Quran "does not interfere in the business of science nor does it infringe on the realm of science." These medieval scholars argued for the possibility of multiple scientific explanations of the natural phenomena, and refused to subordinate the Quran to an ever-changing science. However, there are factual contradictions between the Quran and contemporary science as shown below.

Miracles

Muslims and non-Muslims have disputed the presence of scientific miracles in the Quran. According to author Ziauddin Sardar, "popular literature known as ijaz" has created a "global craze in Muslim societies", starting the 1970s and 1980s and now found in Muslim bookstores, spread by websites and television preachers.
An example is the verse: "So verily I swear by the stars that run and hide...", which proponents claim demonstrates the Quran's knowledge of the existence of black holes; or: " the Moon in her fullness that ye shall journey on from stage to stage" refers, according to proponents, to human flight into outer space.
Critics argue that verses which allegedly explain modern scientific facts about subjects such as biology, the history of Earth, and evolution of human life, contain fallacies and are unscientific.

Astronomy

Ijaz literature tends to follow a pattern of finding some possible agreement between a scientific result and a verse in the Quran. "So verily I swear by the stars that run and hide..." or "So, I swear by the setting places of the stars, and this, if only you knew, is indeed a great oath". is declared to refer to black holes; " the Moon in her fullness; that ye shall journey on from stage to stage" refers to space travel, and thus evidence the Quran has miraculously predicted this phenomenon centuries before scientists.
While it is generally agreed the Quran contains many verses proclaiming the wonders of nature — "Travel throughout the earth and see how He brings life into being" "Behold in the creation of the heavens and the earth, and the alternation of night and day, there are indeed signs for men of understanding..." — it is strongly doubted by Ziauddin Sardar that "everything, from relativity, quantum mechanics, Big Bang theory, black holes and pulsars, genetics, embryology, modern geology, thermodynamics, even the laser and hydrogen fuel cells, have been 'found' in the Quran".

Creation and evolution

Like the Bible, the Quran talks about God creating the universe in six days. In a similar vein to Jewish and Christian adherents to Genesis, many modern believers have argued for a non-literal interpretation.
Quranic verses related to the origin of mankind created from dust or mud are not logically compatible with modern evolutionary theory. Although some Muslims try to reconcile evolution with the Quran by the argument from intelligent design, the Quran can be interpreted to support the idea of creationism. This led to a contribution by Muslims to the creation vs. evolution debate, with some high-profile Muslim preachers advocating for creationism and/or maintaining that the theory of evolution contradicts the teachings of the Quran. According to opinion polls, most Muslims do not accept the theory of evolution, the percentage varying among countries. Some Muslims point to a verse Q.71:14 -- “when He truly created you in stages ˹of development˺?”—as evidence for Evolution.

Ethics

Some critics claim that the morality of the Quran appears to be a moral regression, by the standards of the moral traditions of Judaism and Christianity it says that it builds upon. The Catholic Encyclopedia, for example, states that "the ethics of Islam are far inferior to those of Judaism and even more inferior to those of the New Testament" and "that in the ethics of Islam there is a great deal to admire and to approve, is beyond dispute; but of originality or superiority, there is none." William Montgomery Watt however finds Muhammad's changes an improvement for his time and place: "In his day and generation Muhammad was a social reformer, indeed a reformer even in the sphere of morals. He created a new system of social security and a new family structure, both of which were a vast improvement on what went before. By taking what was best in the morality of the nomad and adapting it for settled communities, he established a religious and social framework for the life of many races of men."
The Sword verse:-
According to the E. J. Brill's First Encyclopaedia of Islam, 1913–1936, Volume 4, the term first applied in the Quran to unbelieving Meccans, who endeavoured "to refute and revile the Prophet". A waiting attitude towards the kafir was recommended at first for Muslims; later, Muslims were ordered to keep apart from unbelievers and defend themselves against their attacks and even take the offensive. Most passages in the Quran referring to unbelievers in general talk about their fate on the day of judgement and destination in hell.
Alexis de Tocqueville, a French political thinker and historian, observed:

War and peace

The Quran's teachings on matters of war and peace are topics that are widely debated. On the one hand, some critics, such as Sam Harris, interpret certain verses of the Quran as sanctioning military action against unbelievers as a whole both during the lifetime of Muhammad and after. Harris argues that Muslim extremism is simply a consequence of taking the Quran literally, and is skeptical about significant reform toward a "moderate Islam" in the future. On the other hand, other scholars argue that such verses of the Quran are interpreted out of context, and Muslims of the Ahmadiyya movement argue that when the verses are read in context, they clearly prohibit aggression, and allow for fighting only in self-defense.
The author Syed Kamran Mirza has argued that a concept of 'Jihad', defined as 'struggle', was introduced by the Quran. He wrote that while Muhammad was in Mecca, he "did not have many supporters and was very weak compared to the Pagans", and "it was at this time he added some 'soft', peaceful verses", whereas "almost all the hateful, coercive and intimidating verses later in the Quran were made with respect to Jihad" when Muhammad was in Medina.
Micheline R. Ishay has argued that "the Quran justifies wars for self-defense to protect Islamic communities against internal or external aggression by non-Islamic populations, and wars waged against those who 'violate their oaths' by breaking a treaty". Mufti M. Mukarram Ahmed has also argued that the Quran encourages people to fight in self-defense. He has also argued that the Quran has been used to direct Muslims to make all possible preparations to defend themselves against enemies.
Shin Chiba and Thomas J. Schoenbaum argue that Islam "does not allow Muslims to fight against those who disagree with them regardless of belief system", but instead "urges its followers to treat such people kindly". Yohanan Friedmann has argued that the Quran does not promote fighting for the purposes of religious coercion, although the war as described is "religious" in the sense that the enemies of the Muslims are described as "enemies of God".
Rodrigue Tremblay has argued that the Quran commands that non-Muslims under a Muslim regime, should "feel themselves subdued" in "a political state of subservience". He also argues that the Quran may assert freedom within religion. Nisrine Abiad has argued that the Quran incorporates the offence of "rebellion" into the offence of "highway or armed robbery".
George W. Braswell has argued that the Quran asserts an idea of Jihad to deal with "a sphere of disobedience, ignorance and war".
Michael David Bonner has argued that the "deal between God and those who fight is portrayed as a commercial transaction, either as a loan with interest, or else as a profitable sale of the life of this world in return for the life of the next", where "how much one gains depends on what happens during the transaction", either "paradise if slain in battle, or victory if one survives". Critics have argued that the Quran "glorified Jihad in many of the Medinese suras" and "criticized those who fail to participate in it".
Ali Ünal has claimed that the Quran praises the companions of Muhammad, for being stern and implacable against the said unbelievers, where in that "period of ignorance and savagery, triumphing over these people was possible by being strong and unyielding."
Solomon Nigosian concludes that the "Quranic statement is clear" on the issue of fighting in defense of Islam as "a duty that is to be carried out at all costs", where "God grants security to those Muslims who fight in order to halt or repel aggression".
Shaikh M. Ghazanfar argues that the Quran has been used to teach its followers that "the path to human salvation does not require withdrawal from the world but rather encourages moderation in worldly affairs", including fighting. Shabbir Akhtar has argued that the Quran asserts that if a people "fear Muhammad more than they fear God, 'they are a people lacking in sense rather than a fear being imposed upon them by God directly.
Various calls to arms were identified in the Quran by Mohammed Reza Taheri-azar, all of which were cited as "most relevant to my actions on March 3, 2006," after he committed a terrorist attack that injured 9 people.

Violence against women

Verse 4:34 of the Quran as translated by Ali Quli Qara'i reads:
Many translations do not necessarily imply a chronological sequence, for example, Marmaduke Pickthall's, Muhammad Muhsin Khan's, or Arthur John Arberry's. Arberry's translation reads "admonish; banish them to their couches, and beat them."
The Dutch film Submission, which rose to fame outside the Netherlands after the assassination of its director Theo van Gogh by Muslim extremist Mohammed Bouyeri, critiqued this and similar verses of the Quran by displaying them painted on the bodies of abused Muslim women. Ayaan Hirsi Ali, the film's writer, said "it is written in the Koran a woman may be slapped if she is disobedient. This is one of the evils I wish to point out in the film".
Scholars of Islam have a variety of responses to these criticisms. Some Muslim scholars say that the "striking" allowed is limited to no more than a light touch by siwak, or toothbrush. Some Muslims argue that striking is only appropriate if a woman has done "an unrighteous, wicked and rebellious act" beyond mere disobedience. In many modern interpretations of the Quran, the actions prescribed in 4:34 are to be taken in sequence, and striking is only to be used as a last resort.
Many Islamic scholars and commentators have emphasized that striking, where permitted, is not to be harsh or even that it should be "more or less symbolic." According to Abdullah Yusuf Ali and Ibn Kathir, the consensus of Islamic scholars is that the above verse describes a light striking.
Some jurists argue that even when striking is acceptable under the Quran, it is still discountenanced.
Shabbir Akhtar has argued that the Quran introduced prohibitions against "the pre-Islamic practice of female infanticide", which is intended to provide a basis for the rights of women.

Houris

Max I. Dimont interprets that the houris described in the Quran are specifically dedicated to "male pleasure". Alternatively, Annemarie Schimmel says that the Quranic description of the houris should be viewed in a context of love; "every pious man who lives according to God's order will enter Paradise where rivers of milk and honey flow in cool, fragrant gardens and virgin beloveds await home..."
Under the Syro-Aramaic Reading of the Quran by Christoph Luxenberg, the words translating to "Houris" or "Virgins of Paradise" are instead interpreted as "Fruits " and "high climbing bowers... made into first fruits." Luxenberg offers alternate interpretations of these Quranic verses, including the idea that the Houris should be seen as having a specifically spiritual nature rather than a human nature; "these are all very sensual ideas; but there are also others of a different kind... what can be the object of cohabitation in Paradise as there can be no question of its purpose in the world, the preservation of the race. The solution of this difficulty is found by saying that, although heavenly food, women etc.., have the name in common with their earthly equivalents, it is only by way of metaphorical indication and comparison without actual identity... authors have spiritualized the Houris."

Christians and Jews in the Quran

The Quran mentions more than 50 people previously mentioned in the Bible, which predates it by several centuries.
Jane Gerber claims that the Quran ascribes negative traits to Jews, such as cowardice, greed, and chicanery. She also alleges that the Quran associates Jews with interconfessional strife and rivalry, the Jewish belief that they alone are beloved of God, and that only they will achieve salvation. According to the Encyclopedia Judaica, the Quran contains many attacks on Jews and Christians for their refusal to recognize Muhammad as a prophet. In the Muslim view, the crucifixion of Jesus was an illusion, and thus the Jewish plots against him ended in failure. In numerous verses the Quran accuses Jews of altering the Scripture. Karen Armstrong claims that there are "far more numerous passages in the Quran" which speak positively of the Jews and their great prophets, than those which were against the "rebellious Jewish tribes of Medina". Sayyid Abul Ala believes the punishments were not meant for all Jews, and that they were only meant for the Jewish inhabitants that were sinning at the time. According to historian John Tolan, the Quran contains a verse which criticizes the Christian worship of Jesus Christ as God, and also criticizes other practices and doctrines of both Judaism and Christianity. Despite this, the Quran has high praise for these religions, regarding them as the other two members of the Abrahamic triad.
The Christian doctrine of the Trinity states that God is a single being who exists, simultaneously and eternally, as a communion of three distinct persons, the Father, the Son and the Holy Spirit. In Islam, such plurality in God is considered a denial of monotheism and thus a sin of shirk, which is considered to be a major 'al-Kaba'ir' sin.
In the Quran, polytheism is considered the eternal sin of shirk, meaning that Jews and Christians, which the Quran calls polytheists, will not be pardoned by God if they do not repent of shirk.
The Quran states that Jews are exalting Ezra as a son of God and for taking their rabbis as "their lords in derogation of God", and should believe in Islam lest a punishment befalls them that turns them into “apes and pigs”.

Hindu criticism

Hindu Swami Dayanand Saraswati gave a brief analysis of the Quran in the 14th chapter of his 19th-century book Satyarth Prakash. He calls the concept of Islam highly offensive, and doubted that there is any connection of Islam with God:
On the other hand, Mahatma Gandhi, the moral leader of the 20th-century Indian independence movement, found the significance of non-violence in the Quran, but the history of Muslims to be aggressive, which is criticized by Muslims themselves based on Quranic consultative concept of Shura, while he claimed that Hindus have passed that stage of societal evolution: