Revisiting the narratives of the Prophet Mohammad (PBUH) about his successors and explaining it in the exclusive number of twelve

Succession of Mohammad (PBUH) is considered the point of differentiation between Shiite and other Islamic sects. The main axis of the Shia faith is the belief that the successor of the Prophet is determined by God's command and within God's exclusive rule and recognition of the twelve apostles called Imams is considered as an vital element in Shia. Although some have tried to dispute the original tradition; however, the frequency and strength of traditions leaves no doubt about the exclusivity of this position for those twelve Imams. The harmony between the traditions of Ithna Asher on Twelve Imams, can also be a definitive proof of truth of the Shiite traditions. On the other hand, different interpretations of the terms used as successors, the Caliphs, Imams, etc. These terms are employed by the family of Prophet to describe the successors of the Prophet. These traditions promise to refute other diversions such as ideas that decrease the number of Imams or unduly attach more Mahdi's after the number of twleve and thus confirms why it is named the Twelver Shiite.