Abu Ahmad ibn Adi al-Jurjani: Upright in hadith, good in it, except his narration from Qatada, for he narrated things from Qatada that others did not narrate in a consecutive manner. He is in a position of truthfulness, except that he makes mistakes sometimes. Jarir is among the trustworthy people and among the most distinguished people of Basra and its nobles.
Abu al-Fath al-Azdi: Truthful, he narrated some reversed hadiths from him in Egypt, and he was not a hafiz. Rushdin and others narrated rejected hadiths from him.
Abu al-Qasim ibn Bashkuwal: He became confused at the end of his life, and he was alright.
Abu Bakr al-Bazzar: Trustworthy
Abu Hatim al-Razi: Truthful, good, he changed a year before his death, he is alright.
Abu Hatim ibn Hibban al-Busti: He used to make mistakes because he narrated most of what he narrated from his memory.
Abu Dawud al-Sijistani: He became confused, so his son prevented him from narrating.
Abu Isa al-Tirmidhi: He may err in some things, and he is truthful.
Ahmad ibn Hanbal: Jarir makes many mistakes, and once: he did not memorize, and once: his hadith from Qatada was not like the hadith of the people, he would stop things and attribute things. Then he praised him and said: A good companion of the Sunnah and virtue. Al-Athram said on the authority of Ahmad: He narrated hadiths in Egypt in which there were mistakes and he did not memorize.
Ahmad ibn Shuayb al-Nasa'i: There is nothing wrong with him.
Ahmad ibn Salih al-Jili: Trustworthy
Ahmad ibn Salih al-Misri: He considered him trustworthy
Ibn Hajar al-Asqalani: Trustworthy, but there is weakness in his hadith from Qatada and he has delusions when he narrates from his memory. Once: Ibn Sa'd weakened him due to his confusion, and it is authentic that he did not narrate anything during the time of his confusion.
Al-Daraqutni: Trustworthy
Al-Dhahabi: Trustworthy, when he became confused, his son prevented him from narrating, and his delusions were forgiven due to the vastness of what he narrated.
Zakaria ibn Yahya al-Saji: Truthful, he narrated hadiths in which there were mistakes, and they are reversed. Jarir is trustworthy.
Shuba ibn al-Hajjaj: I did not see in Basra anyone who memorized better than two men, Hisham al-Dustawai and Jarir ibn Hazim. And when he came, he would say: This brave man has come to you.
Abd al-Rahman ibn Mahdi: He became confused, then he said: He had children, so when they sensed his confusion, they prevented him, so no one heard anything from him during the time of his confusion. And he is more accurate than Qarra ibn Khalid.
Ali ibn al-Madini: Trustworthy
Ali ibn Uthman ibn al-Turkummani: Trustworthy, great
Muhammad ibn Ismail al-Bukhari: Sound in the book, except that he may err in some things, and he is truthful.
Muhammad ibn Sa'd, the scribe of al-Waqidi: Trustworthy, except that he became confused at the end of his life.
The authors of Tahrir Taqrib al-Tahdhib: Trustworthy
Yahya ibn Abd al-Hamid al-Hammani: He considered him to be prone to fabrication
Yahya ibn Ma'in: He narrated better than Abu al-Ashath and is trustworthy. And once: There is nothing wrong with him, he is weak from Qatada, he narrated rejected hadiths from him.