H 159 - It is narrated from Husain bin Saeed from Hammad bin Isa from Rabai bin Abdullah from Fudail bin Yasar that he said: Imam Muhammad Baqir said: When Imam Husain moved to Iraq, he entrusted his will, books and other matters to Umme Salma, wife of the Holy Prophet (s) and told her: That which I have given to you, when my elder son comes to you, you must hand them over to him. When Husain was martyred, Ali bin Husain, Imam Zainul Abideen came to Umme Salma and she handed over to him all that Imam Husain had deposited with her.

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.

There is also the incident, which occurred between Imam Sajjad and Muhammad bin Hanafiyya; that they sought judgment from Hajar Aswad, as we mentioned before, and thus we would not prolong the book by repeating it.