Abū Bakr al-Bayhaqī: Hafiz, Trustworthy, and he quoted al-Bukhari as saying: Hafiz
Abū Hātim ibn Hibbān al-Bustī: Mentioned him among the Trustworthy
Abū `Abd Allāh al-Hakim al-Naysābūrī: Trustworthy, Reliable
Abū Nu`aym al-Fadl ibn Dukayn: Praised him
Ahmad ibn Hanbal: I do not think people narrate from anyone more sound than him
Ahmad ibn Sālih al-Jilī: Trustworthy, Sound in Hadith, he believed in Determinism but did not call to it
Ibrāhīm ibn Ya`qūb al-Jawzajānī: He was among those who spoke about Determinism, and he was among the most sound of people
Ismā`īl ibn `Ulayyah: Among the Hadith scholars of Basra
Ibn Hajar al-`Asqalānī: Trustworthy, Sound, and has been accused of Determinism, and he once said: One of the most sound, consensus on his trustworthiness and piety, and the Imams argued with him
Al-Dhahabī: The Hafiz, and he used to seek knowledge for the sake of Allah
Sulaymān ibn Dāwūd al-Tayasī: The Leader of the Believers in Hadith
Shu`bah ibn al-Hajjāj: He memorized more from Qatāda than I did, and he sat with him more
`Alī ibn al-Madīnī: Sound
Muhammad ibn Ishāq ibn Khuzaymah: Mentioned him in al-Tawhīd and said: One of the most sound of the people of his time in writing
Muhammad ibn Sa`d Kātib al-Wāqidī: Trustworthy, Sound in Hadith, an authority except that he believes in Determinism
Wakī` ibn al-Jarrāh: Sound
Yahyā ibn Ma`īn: Considered him among the most trustworthy people regarding Qatāda, and in the narration of Ibn Muharriz from him, "Which do you prefer regarding Qatāda, Sa`īd or Hishām?" He said: "Sa`īd is trustworthy, sound, and Hishām is trustworthy."