Abu Hatim al-Razi: He is a Companion
Abu Hatim ibn Hibban al-Busti: He is a Companion
Abu Muhammad ibn Hazm al-Zahiri: He is a distinguished Companion
Ibn Hajar al-Asqalani: A well-known Companion
Ibn Abd al-Barr al-Andalusi: The Messenger of Allah, peace and blessings be upon him, appointed him as his successor in Medina twice
al-Mizzi: One of the people of the tree (pledge of allegiance)
Muhammad ibn Ismail al-Bukhari: He is a Companion
Muhammad ibn Saad, the scribe of al-Waqidi: He embraced Islam after the arrival of the Messenger of Allah, peace and blessings be upon him, in Medina and witnessed the Battle of Uhud with him