Ja’far as-Saadiq (d. 148 AH) s/o Imam Baaqir s/o Ali Zain al Abideen s/o Hussain RA s/o Ali RA
Imam Abu Hanifah met Imam Baaqir in Madinah. ( A weaker report suggests Abu Hanifah met Ja’far as Saadiq )
Abu Hanifah has referenced both Imam Baaqir and Ja’far as Saadiq in his works / rulings.
Notwithstanding above, Fiqh Ja’fari itself is not accepted by Hanafi fiqh or sunnis. This is because Fiqh Ja’fari itself was compiled later on – not necessarily under Ja’far Saadiq expertise.
Search words: Jaafar Jafar sadiq