Abu Nasr ibn Makula: One of the Imams of the Khurasanis, and once: One of the people of knowledge of hadith
Abu Ya'la al-Khalili: A great hafiz (scholar who memorized vast amounts of knowledge), a scholar of this type
Al-Dhahabi: The Imam, the hafiz, the steadfast, the traveler, the compiler of the Musnad, and once: One of the vessels of knowledge, and once: A hadith scholar of Bukhara
Jalal al-Din al-Suyuti: Excellent, good, truthful, reliable in hadith, he had great care in seeking out narrations and traveling