Abu al-Fadl al-Jarudi: He was an Imam who was followed during his life and after his death
Abu Hatim ibn Hibban al-Basti: One of the Imams of the world
Abu Zar'ah al-Razi: He was blessed with good writing
Ahmad ibn Hamdun al-A'mashi: I have not seen among the Hadith scholars anyone like him and like al-Dhuhali and Ya'qub al-Fasawi
Al-Dhahabi: The Imam, the scholar, the Hadith memorizer, the critic, the Sheikh of those lands, the author of the great Musnad and many books
Ya'qub ibn Ishaq al-Qarab: We have not seen anyone like Uthman ibn Sa'id, nor has he seen anyone like himself