Abu Hatim al-Razi: Very weak, and he once said: A liar, he does not know how to lie
Abu Hatim ibn Hibban al-Busti: He was among those who differed from the trustworthy narrators with reversed narrations, especially when he narrated from the sheikhs of his town
Abu Zar'a al-Razi: Abandoned him, and once: Accused him of lying
Abu Ya'la al-Khalili: He was a memorizer, knowledgeable in this matter, Ahmad and Yahya considered him acceptable
Ahmad ibn Hanbal: There will be knowledge in Ray as long as Muhammad ibn Humayd is alive, and once: His narration from Ibn al-Mubarak and Jarir is authentic, and as for his narration from the people of Ray, he is more knowledgeable, and once: When he narrates from the Iraqis, he brings straight narrations, and when he narrates from the people of his town, he brings things that are unknown, you don't know what they are, and once: He praised him for his firmness in the
Ahmad ibn Shu'ayb al-Nasa'i: He is not trustworthy, and once: A liar
Ibrahim ibn Ya'qub al-Jawzajani: He was of a bad doctrine, not trustworthy
Ishaq ibn Mansur al-Kusaj: I bear witness against Muhammad ibn Humayd, and Ubayd ibn Ishaq al-'Attar before Allah that they are liars
Ibn Hajar al-'Asqalani: A memorizer, weak, and once: Ibn Ma'in had a good opinion of him
Al-Daraqutni: He is disputed
Al-Dhahabi: A group considered him trustworthy, but it is better to abandon him
Ja'far ibn Muhammad al-Tayalisi: Trustworthy
Salih ibn Muhammad Juzra: Everything that Ibn Humayd used to narrate to us, we used to accuse him of it, and once: I have not seen anyone more audacious before Allah than him, he used to take people's hadiths and turn some of them against others, and once: He used to memorize all his hadiths, and his hadiths used to increase every day
Abd al-Rahman ibn Yusuf ibn Kharash: By Allah, he used to lie, and once: Very weak in hadith
Fadlak al-Razi: I have fifty thousand hadiths from Ibn Humayd, I do not narrate a single letter from him, and once: I entered upon Muhammad ibn Humayd while he was putting chains of narration on texts
Muhammad ibn Ishaq al-Saghani: It was said to him, 'Narrate from Ibn Humayd.' He said: 'Why should I not narrate from him? Ahmad ibn Hanbal narrated from him, Yahya ibn Ma'in narrated from him'
Muhammad ibn Ishaq ibn Khuzayma: He did not narrate from him, and it was said to him: 'Ahmad praised him well.' He said: 'He did not know him, and if he knew him as we knew him, he would not have praised him at all
Muhammad ibn Isma'il al-Bukhari: His hadiths are questionable, and once: Abandoned him
Muhammad ibn Muslim ibn Wara: Abandoned him, and once: A liar
Muhammad ibn Yahya al-Dhuhali: It was said to him, 'What do you say about Muhammad ibn Humayd?' He said: 'Don't you see me narrating from him?'
Yahya ibn Ma'in: Trustworthy, there is nothing wrong with him, a clever Razi, and once: Trustworthy
Ya'qub ibn Shayba al-Sudosi: Many mistakes