Hanafi scholar Mufti Ghulam Rasool of Daar ul Uloom Qadriyah in his excellent biography of Imam Ja’far al-Sadiq “Subeh Sadiq” narrates
Imam Abu Hanifa is one of the distinguished students of Imam Ja’far al-Sadiq (as), as has been confirmed by Ibn Hajar al Makki in his Sawaiq al Muhriqa, Allamah Shiblinji in his Nur al Absar, Abdul Haleem Jindi and Mohaqiq Abu Zohra and various other Muhadatheen and Ulema have clarified that Imam Abu Hanifa was a student of Imam Jafar Sadiq. Imam Abu Hanifa’s initial chain of knowledge was with Imam Baqar (as) and he subsequently expanded this chain of knowledge with Imam Ja’far al-Sadiq (as). In this regard, Abdul Haleem Jindi writes: ‘Abu Hanifa stated that if he ‘hadn’t spent two years of his life with Imam Ja’far al-Sadiq (as), he would have been dead’ (Al-Imam Ja’far As-Sadiq, page 162). Researcher Abu Zohra states: ‘It is widely known that regarding those two years, Abu Hanifa used to say: ‘If these two years had not been available to me due to my good fortune, Numan (Abu Hanifa) would have been dead’ (Imam Ja’far al-Sadiq, page 83). Imam Abu Hanifa used to say: ‘I have never seen a greater jurist than Ja’far bin Muhamad’.