Abu Hatim al-Razi: Truthful, I haven't written about him
Abu Hatim ibn Habban al-Busti: He was one of the Imams of the world, a man of Hadith, jurisprudence, religion and piety
Abu Dawud al-Sijistani: Trustworthy, Reliable
Abu Abd Allah al-Hakim al-Nishaburi: The accepted Imam by all, and he once said: There is agreement on his mastery
Abu Amr al-Dani: A man of Sunnah, trustworthy and reliable
Ahmad ibn Hanbal: One of those whose goodness increases with us every day, and once: Abu Ubayd is a teacher
Ahmad ibn Kamil al-Shajari: Good narration, accurate transmission
Ibrahim ibn Ishaq al-Harbi: Abu Ubayd was like a mountain breathed into with a spirit, he mastered everything except Hadith, the craft of Ahmad and Yahya
Ishaq ibn Rahawayh: More knowledgeable in jurisprudence and knowledge than me, and once: We need Abu Ubayd and he doesn't need us
Ibn Hajar al-Asqalani: The famous Imam, trustworthy, excellent, and an author
Al-Daraqutni: Imam, trustworthy, a mountain, and his father Salam was Roman
Al-Dhahabi: Trustworthy, Scholar
Abdullah ibn Durustawayh al-Nahwi: He was a man of virtue, religion, modesty, and good methodology
Ubayd Allah ibn Ahmad al-Azhari: He was religious, excellent, knowledgeable, a jurist, and a man of Sunnah
Yahya ibn Ma'in: Trustworthy, and once: Someone like me asks about Abu Ubayd