Abu Ahmad al-Hakim: He is not considered strong by them.
Abu Ahmad ibn Adi al-Jurjani: The weakness in his narrations is evident.
Abu Bakr al-Bazzar: A useful man but not a حافظ (one who has memorized a large body of knowledge, particularly hadith), and once: He had worship that kept him busy from memorizing hadith, and others weaken him.
Abu Bakr al-Bayhaqi: Weak, and once: Not strong.
Abu Ja'far al-'Uqayli: All his hadiths are not supported except from a side that has weakness.
Abu Hatim al-Razi: Hadith Rejector
Abu Hatim ibn Hibban al-Busti: He was one of the best of Allah's servants in terms of piety, virtue, worship and righteousness, but he neglected to master memorization, so he would bring something that had no basis, thinking it was correct. He narrates from trustworthy sources what is not from established hadith, without intending to do so. Therefore, it is not permissible to rely on his narrations, even though he was righteous in himself.
Abu Dawud al-Sijistani: His hadiths are average except for his hadiths from Abdullah ibn Dinar.
Abu Zur'ah al-Razi: He is not strong in hadith.
Abu 'Isa al-Tirmidhi: He is weak.
Abu Muhammad ibn Hazm al-Zahiri: Weak
Ahmad ibn Hanbal: It is not permissible for me to narrate from him, and once: Hadith Rejector, and once: His hadith is nothing to me, and once: He did not memorize hadith, and once: There was nothing wrong with him, but he narrated rejected hadiths, and once: Do not write down his hadith, and once: Do not occupy yourself with him.
Ahmad ibn Shu'ayb al-Nasa'i: Weak, and once: He is not trustworthy.
Ibn Hajar al-'Asqalani: Weak, especially in [his narrations from] Abdullah ibn Dinar, and he was a worshipper, and in al-Matalib al-'Aliyah: Weak.
al-Daraqutni: His hadith is not corroborated, and once he said: Weak.
al-Dhahabi: They weakened him.
Zakariya ibn Yahya al-Saji: Hadith Rejector
Zuhayr ibn Harb al-Nasa'i: He narrated rejected hadiths from Abdullah ibn Dinar.
Abd al-Baqi ibn Qan' al-Baghdadi: There is weakness in him.
Ali ibn al-Madini: He was very weak, and Yahya ibn Sa'id al-Qattan did not see it permissible to write down his hadith, and once: He narrates rejected hadiths.
Muhammad ibn Isma'il al-Bukhari: I did not include any narration from Musa ibn Ubaydah nor do I narrate from him.
Muhammad ibn Sa'd Kathir al-Waqidi: Trustworthy, narrates many hadiths, but not a proof.
Muhammad ibn Abdullah ibn al-Barqi: Weakness was prevalent in his hadith, and some scholars abandoned him.
Muslim ibn al-Hajjaj al-Naysaburi: Weak in hadith
Wakee' ibn al-Jarrah: Trustworthy
Yahya ibn Sa'id al-Qattan: We used to avoid him, and once: He did not approve of him.
Yahya ibn Ma'in: He is not a liar, but he narrated rejected hadiths from Abdullah ibn Dinar, and once: His hadith is not used as proof, and once: Weak, and once: He is nothing, and once: Weak, one writes from his hadith those related to softening of the hearts, and in the narration of Ibn Mahriz, he said: He is not that strong. It was said to him: Should his hadith be written down? He said: Yes.
Ya'qub ibn Shaybah al-Sadusi: Very weak in hadith, and some people do not write down his hadith because of his forgetfulness, weakness, and excessive confusion. He was a truthful person.