H 160 - Saad bin Abdullah has narrated from Muhammad bin Isa bin Ubaid from Yunus bin Abdur Rahman from Husain bin Thuwair bin Abi Fakhta from Imam Ja’far Sadiq that he said: After Hasan and Husain, Imamate will never come to two brothers because after Ali Ibn Husain, Imamate is only in his progeny, generation after generation.