Abu Ahmad bin Adi al-Jarjani: His hadith is upright and truthful. He is among the vigilant narrators of hadith, and he has many hadiths, a good history, and a book on the classes of men.
Abu Hatim al-Razi: I don't narrate from him, he is not strong. I wrote three hadiths from his Musnad on the authority of Abu al-Walid, then I went to Abu al-Walid and asked him about them, but he denied them.
Abu Hatim bin Habban al-Busti: He was a pious scholar, knowledgeable about the days of the people and their lineages.
Abu Dawud al-Sijistani: He is fine.
Abu Zar'ah al-Razi: He abandoned narrating from him.
Ibn Abi Hatim al-Razi: Abu Zar'ah did not want to read his hadith to us.
Ibn Hajar al-Asqalani: He was truthful, he may have made mistakes, and he was a knowledgeable historian. Once: One of the prominent hafiz (memorizers of hadith) from the sheikhs of Bukhari, and all that Bukhari narrated from him was accompanied by others. He said, 'Khalifa told us,' and this is in three hadiths. And if he narrated it alone, he would comment on it and say, 'Khalifa said, Abu al-Walid al-Baji said.' However, there is nothing in it from his own narration.
Al-Dhahabi: The trustworthy hafiz.
Ali ibn al-Madini: Weak, a tree that bears hadith. And once: If he had not narrated hadith, it would have been better for him.
Muhammad bin Ismail al-Bukhari: Close to being an acceptable narrator of hadith.
Muslim bin al-Qasim al-Andalusi: He is fine.
Authors of Tahrir Taqrib al-Tahdhib: Truthful, good in hadith.
Yahya bin Ma'in: He considered him weak.