He said: Abul Hasan Ali b. Muhammad reported to me from Ahmad b. Ibrahim, who reported from Abul Hasan Ali b. al-Hasan, who reported from al-Husain b. Nasr b. Mazahim, who reported from his father, who reported from Abu Abdil Rahman Abdullah b. Abdul Malik, from Yahya b. Salimah, from his father Salimah b. Kuhail, from Abu Sadiq who said:
I heard AMIRUL MO'MINEEN ALI B.ABI TALIB (ASWS), peace be upon him say: "My faith is that of the PROPHET (SAWW), and my descent is the descent of the PROPHET (SAWW). So whoever, speaks ill of my faith and my descent, slurs the faith and the descent of the PROPHET (SAWW)."
(Al-Amali Shaikh Mufeed: The Tenth Assembly: Hadees No 3)