Ali bin Husayn (may Allah have mercy on him) narrated that the heirs of Abu Talib were Aqil and Talib; Ali and Ja'far (may Allah be pleased with them both) did not inherit. He said: That is why we gave up our share of Sha'b Abi Talib.
Hadith Referenceمسند الإمام الشافعي / كتاب الفرائض والوصية / 1347
Hadith Takhrijاسناده ضعيف لإنقطاعه، فان على بن الحسين لم يسمع من جده على بن ابى طالب اخرجه عبد الرزاق (9853) ، (9854) والمروزي في السنة (108)۔