Clarification of the Transmission Chain to Jafar Bin Al-Qasim

And whatever is narrated from Jafar bin Al-Qasim, I have narrated it from my father and from Muhammad bin Al-Hasan - may Allah (swt) be pleased with them - from Sad bin Abdullah, and from Muhammad bin Yahya, and from Ahmad bin Idris, all from Ahmad bin Abi Abdullah, from his father, from Jafar bin Al-Qasim.