Abu Hatim ibn Hibban al-Busti: He was the governor of Umar over Iraq
Abu Nasr ibn Makula: He was a companion and narrator of the Prophet, peace and blessings be upon him
Ibn Hajar al-Asqalani: A famous companion whom Umar appointed as governor over the land of Kufa, and Ali over Basra before the Battle of the Camel
Al-Dhahabi: He was a companion