Abu Ja'far al-'Uqayli: His Hadith is upright, God willing
Abu Hatim al-Razi: Knowledgeable among people in the knowledge of Hadith and its sciences
Abu Hatim ibn Habban al-Busti: He was one of the most knowledgeable people of his time in the sciences of the Hadith of the Messenger of God, peace and blessings be upon him, among those who traveled, collected, wrote, authored, memorized, and discussed
Abu Dawud al-Sijistani: More knowledgeable about the different narrations of Hadith than Ahmad, and once said: Ali ibn al-Madini is better than ten thousand like al-Shadhkuni
Abu Zur'ah al-Razi: There is no doubt about his truthfulness, and once said: I stopped narrating from him because of the tribulation
Ahmad ibn Hanbal: He did not narrate from him after the tribulation, and once said: Narrated to us a man, then he stopped mentioning his name, and he used to say: Narrated to us a man, then he abandoned his Hadith after that
Ahmad ibn Shu'ayb al-Nasa'i: As if God created him for Hadith. They criticized his response during the tribulation, but he recanted, repented, and apologized, saying that he was afraid for himself, and once said: Trustworthy, reliable, one of the Imams in Hadith
Ibn Hajar al-'Asqalani: Trustworthy, Imam, most knowledgeable of his time in Hadith and its sciences
Al-Daraqutni: One of the Hadith scholars
Al-Dhahabi: The Sheikh, the Imam, the Proof, the Leader of the Believers in Hadith
Al-Mizzi: The prominent Imam in this matter
Sufyan ibn 'Uyaynah: I used to learn from him more than he learned from me
Salih ibn Muhammad al-Jazari: The most knowledgeable person I have ever met in Hadith and its sciences
Abd al-Rahman ibn Mahdi: The most knowledgeable of the people in the Hadith of the Messenger of God
Ubayd Allah ibn Sa'id al-Sarkhasi: He reached a level in Hadith that no one else reached
Muhammad ibn Isma'il al-Bukhari: The most knowledgeable of his time, and once said: I never felt small except in his presence
Yahya ibn Sa'id al-Qattan: I learn from him more than he learns from me
Yahya ibn Ma'in: When he came to us, he showed the Sunnah, and when he went to Basra, he showed Shi'ism, and once said: One of the most knowledgeable people about Yahya ibn Sa'id