Abu Abdillah al-Hakim an-Naysaburi: The Imam of the people of Hadith in Khurasan during his time, and the most ascetic of the scholars I have seen and the most devout
Ad-Dhahabi: The unique Imam, the Jurist, the Hafiz, the Mufti, the Sheikh of Khurasan
Abd al-Hayy bin al-Imad al-Hanbali: Trustworthy, praised by more than one