Abi Talib (ع)...
Abi Talib (ع), and so finally the Prophet (ص) said, “After me, you will be my spiritual heir, my vizier, and my successor.”[^2] Another occasion was the event at Ghadir Khum in which he expressly said, “Whomever I am his master, then ‘Ali (ع) is also his master.”[^3] Another of such assertions appears in the hadith of Manzilat in which the Prophet (ص) is related as having told Imam ‘Ali b.
Abi Talib (ع), “You are to me what Harun was to Musa, except that there will be no prophet coming after me.”[^4] It should be noted that the related sayings of the Prophet (ص) regarding the successorship of Imam ‘Ali b. Abi Talib (ع) are too numerous to be impugned, and this point has been alluded to in many Sunni and Shi’ite books.[^5] In another hadith, the Prophet (ص) is recorded to have specifically mentioned the names of all the Imams—starting with Imam ‘Ali b.
Abi Talib (ع) and up to Imam Mahdi (ع) — to Jabir b. ‘Abdullah Ansari.[^6] Thus this fact must be kept in mind that although the names of the Imams (ع) do not appear in the Qur`an, but the Prophet (ص) — whose sayings are, according to the Qur`an, all true and are essentially revelations[^7]—did specify their names and reiterated their successorship and leadership.
Furthermore, in the Qur`an there is an allusion to the Commander of the Faithful’ position of leadership, and although his name has not been mentioned there, nevertheless, the majority of the exegetes, whether Shi’ite or Sunni, admit that the allusion refers to ‘Ali’s (ع) status, and as such applies to no other than him.[^8] The verse in which that allusion occurs is verse 55 of Surat al-Ma`idah, which reads, “Your guardian is only Allah, His Apostle, and the faithful who maintain the prayer and give the zakat while bowing down.” [^9] Considering that in Islam there is no such rule that the Muslim should give zakat while bowing down in prayer, it becomes evident that this verse is referring to an incident that really took place.
That incident took place on the day when Imam ‘Ali b. Abi Talib (ع) was performing the ritual bow in the prayer, a beggar came up to him and asked him for some help. In response, Imam ‘Ali b. Abi Talib (ع) pointed to his ring, and so the beggar took the ring off of his finger and left. According to the reading derived from the aforementioned historical incident, the verse asserts that the leadership of the Muslims is “only” in the hands of Allah (awj), his Apostle, and Imam ‘Ali b.