Abu Sa'd al-Sam'ani: One of the Imams of the Muslims
Abu Abd Allah al-Hakim al-Naysaburi: He was one of the Imams of the Muslims
Abu Ali al-Hafiz al-Naysaburi: One of the Imams, he used to memorize the Muqawafat and Marasil as we memorize the Musanids
Al-Khatib al-Baghdadi: He was one of the Imams of the Muslims and one of the Hadith scholars known for his honesty, piety, precision and alertness
Al-Dhahabi: The great Imam and the trustworthy Hadith scholar
Abd al-Rahman ibn Muhammad al-Idrisi: I don't know of anyone who grew up in Istrabad like him in his memorization and knowledge
Yaqut ibn Abd Allah al-Hamawi: The Faqih, one of the Imams