Imamate (Ismaili doctrine)

The doctrine of the Imamate in Isma'ilism differs from that of the Twelvers because the Isma'ilis had living Imams for centuries after the last Twelver Imam went into concealment. They followed Isma'il ibn Jafar, elder brother of Musa al-Kadhim, as the rightful Imam after his father, Ja'far al-Sadiq. The Ismailis believe that whether Imam Ismail did or did not die before Imam Ja'far, he had passed on the mantle of the imamate to his son Muhammad ibn Isma'il as the next imam.

According to some early Isma'ilis, the Seveners, as well as the Qarmatians, a splinter group, the number of imams was fixed, with seven Imams preordained by God. These groups considers Muhammad ibn Isma'il, the foundation Imam of the Isma'ili branch of Shia Islam, to be the Mahdi and to be preserved in hiding, which is referred to as the Occultation.

Qarmatians believed that Muhammad ibn Isma'il was Imām al-Qā'im al-Mahdi and the last of the great messenger - prophets. On his reappearance, he would bring a new religious law by abrogating the one conveyed by the Prophet Muhammad. Qarmatians recognized a series of Seven law-announcing prophets called ūlul’l-ʿazm, namely, Nūh, Ibrāhīm, Mūsā, ʿIsā, Muhammad bin ʿAbd Allāh, Ali ibn Abu Tālib, and Muhammad bin Ismā‘īl, who was the seal of the series.

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