Salsabil (Quran)

Salsabil is an Arabic term referring to a spring or fountain in paradise, mentioned in the Qur'an and in some hadiths. The term is also used as a common and proper noun.

In the Quran

In the Quran, the word is used once, to refer to a spring or fountain in paradise. The sole quranic reference is in sura Al-Insan. There is also mention in some hadith.
The verse may be in reference to the previous verse concerning the drink provided to those who enter paradise. "Salsabil" is usually but not always considered to be used as a proper noun, not a common noun, in this verse. The common noun is used in Hindustani to mean "unning limpid, sweet water", and in Persian for a pleasant beverage.

Derivations

The Qur'anic term is probably the source of the engineering use of "salsabil", to designate a type of fountain. This is used for aerating drinking water in a sebil, for evaporative cooling of a building, or both.
Like many terms found in the Quran, it is used as a proper name given to people, as both a personal or as a family name. It is also the name of one of the old neighborhoods in Tehran, Iran.