Hadith No: 2
Ibn Abi Shaiba - Al-Kitab al-Musannaf fi al-Ahadith wal-Athar
Book of Virtues - Virtues of Ali ibn Abi Talib (ra)
Volume: (6) - Page Number: (371)
32106 - Wuqi' narrated to us, from Shu'bah, from Amr ibn Murrah, from Abu Hamzah, the client of the Ansar,
from Zayd ibn Arqam, who said: "The first to embrace Islam with the Messenger of Allah (peace be upon him and his holy progeny) was Ali." Amr ibn Murrah said: So I went to Ibrahim and mentioned this to him, and he rejected it.