He said: Abu Ubaidullah Muhammad b. Imran al-Marzbani reported to me from Abul Fadhl Abdullah b. Muhammad al-Tusi, who reported from Abu Abdul Rahman Abdullah b. Ahmad b. Muhammad b. Hanbal, who reported from Muhammad b. Yahya b. Abi Saminah, who reported from Ubaidullah b. Musa, who reported from Matar al-Iskaf that:
The PROPHET (SAWW), peace be upon him and his progeny, said: "Verily, ALI(ASWS) is my brother, my minister and my successor in the family, and he is the best of all who survive me, he will repay my debts and fulfill my pledges."
(Ref: Al-Amali Shaikh Mufeed: The Seventh Assembly : Hadees No.6)