The Necessity for Vicegerency of The Prophet Muhammad (PBUH) And TheWestern Researcher’s Opinion

Since the Successession of the holy prophet Muhammad (PBUH) has been one of the continual and conflicting issues amongst the Muslims, various views have been presented in this regard throughout the history. Even the non-Muslims scholars in particular the western researchers have not kept silence and uttered their view of this subject.Though the present article tries to draw western researcher’s opinion, but to cover the issue from multifarious dimensions, the Shiite and Sunnite opinion of the subject have also been presented. Since the western researchers studied this subject on the Sunnite opinion, some of their views have been criticized. Moreover, the most important reasons of the Shiites about Successession of Ali (a. s) are also presented, as: the verse of EnzareAshirah, Hadith and the event of Ghadir, Hadith of Thaqalain, Hadith of Manzilat, dispatching of Usamah’s corps, Hadith of pen and ink