Abu Ahmad al-'Askari: Most hadith scholars do not authenticate his narrations
Abu Hatim bin Hibban al-Busti: It is said that he was a companion, he witnessed two battles with Ali, counted among the people of Kufa, and he is the one who is called: Hajar bin al-Adbar
Muhammad ibn Sa'd, the author of al-Waqidi: A well-known, trustworthy Shi'a