Abu Hatim al-Razi: Narrated a Munkar (rejected) hadith
Abu Hatim ibn Hibban al-Busti: Upright in hadith
Abu Zur'ah al-Razi: Weak in hadith
Ibn Hajar al-'Asqalani: Saduq (truthful) but may have erred, and once said: He has only one narrated hadith in Bukhari
al-Daraqutni: Contradicts the trustworthy narrators
Muhammad ibn Isma'il al-Bukhari: Narrated from him in conjunction with another narrator