Muhammad b. Musa b. al-Mutawakkil (ra) narrated to us. He said: Muhammad b. Yahya al-`Attar (rh) narrated to us. He said: Ahmad b. Muhammad b. `Isa narrated to us from al-Qasim b. Yahya from his grandfather al-Hasan b. Rashid from `Amr b. Mughlis from Khalaf from `Atiyya al-`Awfi from Abi Sa`id al-Khudri. He said
I asked the Messenger of Allah (s) about the saying of Allah, “The one who had knowledge of the Book said” (27:40). He said: That is the deputy of my brother Sulayman b. Dawud. So, I said to him: O Messenger of Allah! [What about] the saying of Allah, “Say: Allah suffices as a witness between us, as well as him with knowledge of the Book” (13:43)? He said: That is my brother `Ali b. Abi Talib.