Abu Ja'far al-'Uqayli: There are mistakes in his narrations
Abu Hatim al-Razi: His narrations are written down but not used as proof
Abu Sa'id ibn Yunus al-Misri: Thiqah (trustworthy)
Ahmad ibn Hanbal: He made mistakes in some narrations, and once: he weakened him
Ahmad ibn Salih al-Misri: Good methodology
Ibn Hajar al-'Asqalani: Saduq (truthful) but with some mistakes, and once: he only has two narrations in Sahih al-Bukhari as a follower
Al-Dhahabi: A group authenticated him
Zakariya ibn Yahya al-Saji: Da'if (weak)
Muhammad ibn Idris ash-Shafi'i: Thiqah (trustworthy)
Authors of Tahrir Taqrib al-Tahdhib: Da'if (weak) but considered reliable, and both al-Bukhari and Muslim narrated from him
Yahya ibn Ma'in: Da'if (weak)