Islamic leadership in the context of Saqifah

In Nizari Isma'ili doctrine, imamate (Arabic: إمامة) is a concept which defines the political, religious and spiritual dimensions of authority concerning Islamic leadership over the nation of believers. The primary function of the Imamate is to establish an institution between an Imam who is present and living in the world and his following whereby each are granted rights and responsibilities.

The Nizari Imamate follows a genealogy of male Imams originating from the prophethood of Muhammad by means of wedlock of his daughter Fatimah with his cousin Ali and in succession, through their son Hussein and his onward descendants up to the present day. Each ordained as successor Imam of this lineage is charged with serving the Nizari Ismailis community of his era; who are liable to pay the zakat (tithe) dues to him due to his being as ex-officio and the designated Nizari Imam. The Imam in return, imparts them the religious and spiritual guidance and also strives for their physical well-being to the best of his ability.

Imāmah (Arabic: إِمَامَة) means "leadership" and is a concept in Twelver theology. The Twelve Imams are the spiritual and political successors to Muhammad, the Prophet of Islam, in the Twelver branch of Shia Islam. According to Twelver theology, the successors to Muhammad are infallible human beings, who rule justly over the community and maintain and interpret sharia and undertake the esoteric interpretation of the Quran. The words and deeds of Muhammad and the Imams guide the community. For this, the Imams must be free from error and sin and chosen by divine decree—nass—through the Prophet.

Shi'a believe that divine wisdom—'Aql—is the source of the souls of the Prophets and Imams and gives them esoteric knowledge—hikmah—and that their suffering is a means by which their devotees may acquire divine grace. The Imam is not the recipient of divine revelation, but has a close relationship with God, who guides him, allowing the Imam in turn to guide others. The Imamat, or belief in the divine guide, is a fundamental belief in Shia Islam and is based on the concept that God would not leave humanity without access to divine guidance.

In Zaydi Islam, the imamate (Arabic: إمامة, romanized: imama) is the supreme political and religious leadership position. In common with other Shi'a sects, it is reserved for Alids—i.e., descendants of Muhammad via Ali ibn Abi Talib and Fatimah. Unlike the Twelver or Isma'ili imamate, however, it was not hereditary and could be claimed by any qualified Alid; nor were its holders ascribed semi-divine attributes of infallibility and miracle-working. Necessary qualifications were a grounding in Islamic jurisprudence and a public call to allegiance, usually in the form of leadership of an uprising against unlawful authority. In practice, this meant there could be several Zaydi imams at the same time, even in the same region, or none at all. This resulted in the unique concept of a 'restricted' imamate for holders of political power who did not meet the scholarly credentials. Moreover, the personal nature of the imamate for a long time prevented the rise of persistent institutions, rendering the Zaydi states established in Yemen and Tabaristan unstable. As a result, the imamate often came to be passed down in hereditary fashion, especially as the Imams of Yemen abandoned Zaydi doctrines for Sunni ones in the 18th century.