Abu Bakr al-Bayhaqi: He is subject to scrutiny
Abu Hatim al-Razi: There is nothing wrong with him, his hadith is recorded
Abu Hatim ibn Hibban al-Busti: His mistakes were egregious and his delusions were many, so he deserved to be abandoned
Abu Zur'ah al-Razi: He is not strong
Abu Mu'mar al-Qutay'i: Thiqah
Ibrahim ibn Ya'qub al-Jawzajani: He is not strong in hadith
Ibn Hajar al-'Asqalani: Saduq (truthful) makes mistakes, once: Thiqah
Al-Dhahabi: Thiqah
Sufyan al-Thuri: If anyone from my family is saved, it is Ammar
Ali ibn Hajar al-Sa'di: Thiqah
Amr ibn Muhammad al-Naqid: More trustworthy than Sayf
Muhammad ibn Isma'il al-Bukhari: He was more trustworthy than his brother Sayf, once: He said: Shu'bah speaks about him, but we narrate from him
Muhammad ibn Sa'd Katb al-Waqidi: Thiqah
Authors of Tahrir Taqrib al-Tahdhib: Thiqah, the statement of Ibn Hibban is refuted by the Imams' authentication of him, Muslim included him in Sahih
Yahya ibn Ma'in: He was not bad, and once: Thiqah