Abu Bakr al-Bazzar: Da'if (weak) in Hadith
Abu Ja'far al-'Uqayli: He narrated many Hadiths from Malik that are not followed
Abu Hatim al-Razi: He was Saduq (truthful) but he lost his sight so perhaps he met (narrators) and wrote down Hadiths correctly, and once (he said): Mudtarib (confused)
Abu Hatim ibn Hibban al-Busti: He reports strange and unique narrations
Abu Dawud al-Sijistani: He criticized him severely
Abu 'Abdullah al-Hakim al-Naysaburi: They criticized him
Ahmad ibn Shu'ayb al-Nasai: He is not trustworthy
Ibn Hajar al-'Asqalani: Saduq (truthful) but his memory deteriorated, and once (he said): Abu Dawud, al-Nasai, and al-I'timaad criticized him, and what Abu Hatim said about him is correct, and it seems like al-Bukhari took from his book before he lost his sight
al-Daraqutni: Da'if (weak), and he also said: He should not be abandoned
al-Dhahabi: Saduq (truthful) in general, a narrator of Hadith
Zakaria ibn Yahya al-Saji: He is lenient, he narrated Hadiths from Malik that are unique to him
Authors of Tahrir Taqrib al-Tahdhib: Da'if (weak) but he is considered, and it seems that al-Bukhari selected from his Hadiths