Sevener

al-Ismāʿīliyya al-khāliṣa / al-Ismāʿīliyya al-wāqifa or Sevener was a branch of Ismā'īlī Shīʻa. They broke off from the more numerous Twelvers after the death of Jafar al-Sadiq in 765 AD. They became known as "Seveners" because they believed that Isma'il ibn Ja'far was the seventh and last Imam. They believed his son, Muhammad ibn Isma'il, would return and bring about an age of justice as Mahdi. Their most well-known and active branch were the Qarmatians.

List of Imams

Imām	Sevener al-Ismāʿīliyya al-khāliṣa Imām	Period
1	Ali – First Ismā'īlī Imām
2	Hasan ibn Ali – Second Ismā'īlī Imām
3	Husayn ibn Ali – Third Ismā'īlī Imām
4	Ali ibn Husayn Zayn al-Abidin – Fourth Ismā'īlī Imām
5	Muhammad al-Baqir – Fifth Ismā'īlī Imām
6	Ja'far al-Sadiq – Sixth Ismā'īlī Imām
7	Isma'il ibn Ja'far – Seventh Ismā'īlī Imām

Sometimes "Sevener" is used to refer to Ismā'īlīs overall, though mainstream Musta'li and Nizari Isma'ilis have far more than seven imams.

Ismaili imams who were not accepted as legitimate by Seveners

The following Ismaili imams after Mahdi had been considered as heretics of dubious origins by certain Qarmatian groups who refused to acknowledge the imamate of the Fatimids and clung to their belief in the coming of the Mahdi.