Abu 'Abd Allah al-Hakim al-Naysaburi: Thiqah Mamun, an authority
al-Khatib al-Baghdadi: The Huffadh narrated from him, and he was a trustworthy, preserving, knowledgeable and learned scholar
al-Daraqutni: Thiqah Mamun, and someone like him is questioned, and once: A trustworthy Hafidh, and he is not among those who are asked about
al-Dhahabi: More than one person authenticated him and described him as preserving and knowledgeable