Abu Sa'd al-Sam'ani: A righteous and virtuous sheikh, a knowledgeable scholar, who accompanied the Imams
Abu Abd Allah al-Hakim al-Naysaburi: He accompanied the famous sheikhs, and sought knowledge of hadith, then advanced in the knowledge of medicine
Al-Dhahabi: The trustworthy sheikh, the scholar, the sheikh of physicians, the remnant of the sheikhs