Abu Bakr al-Barqani: His hadiths are full of strangeness and I have some reservations about him
Abu Abdullah al-Hakim al-Naysaburi: The Sheikh of justice and evaluation, and the best of our Sheikhs in consoling strangers of the craft, and I do not know of anyone who spoke against him with proof, and once said: The Sheikh of Nishapur in his time, and he was one of the devout worshipers, the pilgrims, those who spent on the poor and scholars, and we used to count fourteen hadith scholars in his council
Al-Khatib al-Baghdadi: Trustworthy, Upright, Prolific