Abu Bakr Al-Bayhaqi: Thiqah (reliable)
Abu Hatim Al-Razi: La yuhtaj bihi (his narrations are not permissible as evidence)
Abu Dawud Al-Sijistani: La anshatu li hadithihi (I do not find delight in his narrations)
Abu Muhammad ibn Hazm Al-Zahiri: Saduq (truthful) fi hifzihi shay' (there is something in his memorization)
Abu Nuaym Al-Asbahani: Thiqah (reliable)
Ahmad ibn Shuaib Al-Nasa'i: Laysa bihi ba's (there is nothing wrong with him)
Ibn Hajar Al-Asqalani: Saduq (truthful) fi hifzihi shay' (there is something in his memorization), wa marrah: ghamzahu Abu Dawud bila mustanad, wa qad ihtaja bihi fi sunanihi wa al-baqoon (and once: Abu Dawud criticized him without evidence, and he cited him in his Sunan and the rest)
Al-Dhahabi: Al-Hafiz (The memorizer)
Muhammad ibn Bashar Al-'Abdi: Lawla furqan min Al 'Amr ibn Assem lataraktu hadithaho (If it were not for a group from the family of Amr ibn Assem, I would have abandoned his hadith)
Muhammad ibn Sa'd Katb Al-Waqidi: Salih (righteous)
Musannifū Tahrir Taqrib al-Tahdhib: Saduq (truthful) Hasan (good) Al-Hadith, wa la na'lamu min ayna ata biqawlihi: fi hifzihi shay' (and we do not know where he got his saying: there is something in his memorization)
Yahya ibn Ma'in: Salih (righteous)