[4/-] The Treatise on the ‘Status of the Narrations of our Companions and Establishing their Authenticity’ authored by Sa’d b. Hibat Allah al-Rawandi: From Muhammad and Ali the two sons of Ali b. Abd al-Samad from their father from Abi al-Barakat Ali b. al-Husayn from al-Saduq from his father from Sa’d b. Abdallah from Ya’qub b. Yazid from Muhammad b. Abi Umayr from Jamil b. Darraj from Abi Abdillah عليه السلام who said: halting in the face of doubt is better then rushing headlong into destruction, there is upon every truth a reality, and upon every correct thing a light, so whatever agrees with the Book of Allah then take it, and whatever opposes the Book of Allah then leave it. Comments
Sa’d (Sa’eed) b. Hibat Allah is Thiqa.
Ali b. Abd al-Samad (Junior) is a pillar of the religion and a Faqih who is Thiqa, he read under his father and also Abu Ali the son of the Shaykh Abi Ja’far (al-Tusi), this is according to the Shaykh Muntajab al-Diin (Ali b. Ubaydallah) [in his Fihrist].
His brother Muhammad is also merituous (Fadhil) and august (Jalil) according to al-Hurr al-Amili.
Ali b. Abd al-Samad (Senior) their father is Thiqa or righteous (Salih).
Abu al-Barakat al-Jawzi is a righteous scholar and a Hadith narrator according to Muntajab al-Diin again.
Thus, the chain to al-Saduq is good (Hasan) and from him to the Imam it is Sahih.
Other non-reliable-in-chain narrations have also come down corroborating this purport – refer to Bihar al-Anwar and Jami al-Ahadith.
The only outstanding question would be the specifics of how this particular treatise reached al-Majlisi and al-Hurr – may Allah have mercy on both.