Imamate And Leadership - Lessons on Islamic Doctrine Book 4
This text proves with convincing evidence from authentic Sunni sources the immediate successorship after the demise of the Holy Prophet (S) of Imam Ali ('a) and the question of Imamate as a prerogative bestowed by God upon a chose person from the family (Ahl al-Bayt) of the Prophet (S), who before his death, by decree of God, transfers the Imamate to another by an explicit designation.