Abu Hatim al-Razi: He was a Companion
Ibn Hajar al-Asqalani: Companion
Jalaluddin as-Suyuti: He embraced Islam at the time of the conquest (of Makkah) and wrote for the Prophet, peace and blessings be upon him
Muhammad ibn Ismail al-Bukhari: The Prophet (peace and blessings of Allah be upon him) invoked blessings upon him