Ahmad b. Harun al-Fami narrated to us. He said: Muhammad b. `Abdullah b. Ja`far narrated to us from his father from Ya`qub b. Yazid al-Anbari. He said: Al-Hasan b. `Ali b. Faddal narrated to us from Isma`il b. al-Fadl al-Hashimi from al-Sadiq Ja`far b. Muhammad from his father Muhammad b. `Ali from his father `Ali b. al-Husayn from his father a-Husayn b. `Ali from his father Amir al-Mu’minin `Ali b. Abi Talib . He said: I said to the Messenger of Allah (s): Inform me of the number of Imams after you.

So, he said: O `Ali! They are twelve. You are the first of them, and the Qa’im is the last of them.