Abu al-Qasim al-Baghawi: Narrated from Mis'ar saying: There is no one more knowledgeable about the hadith of Ibn Mas'ud than al-Mas'udi
Abu Hatim al-Razi: Salih (righteous)
Abu Hatim ibn Habban al-Busti: Mentioned him in al-Thiqat
Ahmad ibn Hanbal: Upright, trustworthy, Ibn Mahdi narrated from him, and his father was one of the best Muslims
Ibn Hajar al-'Asqalani: Thiqah
al-Dhahabi: Thiqah Imam, chaste
Muhammad ibn Sa'd Kathir al-Waqidi: Thiqah, narrated few hadiths
Yahya ibn Ma'in: Thiqah
Yaqub ibn Sufyan al-Faswi: Thiqah