Abu Hatim al-Razi: Unknown
Ahmad ibn Muhammad al-Khalal: He had heard from Abu Abdullah, and died before him, and I do not know anyone who understood better than Muhammad ibn al-Hakam al-Ahwal in what he asked, by debate, argument, knowledge, and memorization, and Abu Abdullah used to confide in him with things from his youth that he did not confide in everyone, and he was close to Abu Abdullah, and through him Abu Talib reached Ahmad, and he was the son of
Ibn Hajar al-Asqalani: Among the sheikhs of al-Bukhari, Abu Hatim did not know him and said that he was unknown. I said that al-Bukhari knew him. Abu Hatim did not know him, but others knew him, and he was trustworthy and virtuous. He said in al-Tahdhib: The author of al-Zahra claimed that he was attributed to his grandfather and that he was Muhammad ibn Abdah ibn al-Hakam, and that al-Bukhari narrated four hadiths from him.
Al-Dhahabi: Trustworthy