Abu Hatim ibn Hibban al-Busti: Mentioned him among the trustworthy narrators
Abu Dawud al-Sijistani: Praised him
Abu Zur'ah al-Razi: He is acceptable
Abu Ubaid al-Aajurri: He went out with the Kharijites
Ahmad ibn Hanbal: Upright in narration, or close to it
Ahmad ibn Salih al-Jili: Trustworthy
Ibn Hajar al-'Asqalani: Truthful, accused of holding the Kharijites' view
Ibn 'Abd al-Barr al-Andalusi: He is considered trustworthy in his narration
Al-Dhahabi: Trustworthy
Qatadah ibn Di'amah al-Sadusi: He was a Kharijite
Muhammad ibn Isma'il al-Bukhari: Cited him as evidence
Muhammad ibn Sa'd Kathir al-Waqidi: Trustworthy, Allah willing
Authors of Tahrir Taqrib al-Tahdhib: Trustworthy
Yahya ibn Ma'in: Trustworthy