Abu Dawud al-Sijistani: He used to inspect men
Ahmad ibn Shuayb al-Nasai: He is alright
Ahmad ibn Muhammad al-Khalal: He was one of Ahmad's close companions and leaders, and he used to honor him and tell him things he would not tell others
Ibn Hajar al-'Asqalani: Trustworthy, excellent
al-Dhahabi: Truthful