As for believers in Imamate of Abdullah Ibn Ja’far, namely the Fatahiyya, and that of Ja’far Ibn Ali, their creed is wrong, because an Imam has to be infallible and these two were not. Their evident actions, which contradict infallibility, are widely known and scholars have narrated them and they are present in books and we will not prolong the discourse by quoting them here. Besides, the established principle, which is beyond doubt amongst the Shia, is that Imamate shall not pass from one brother to another, after Hasan and Husain عليه السلام. Therefore, the Imamate of Ja’far, after his brother, is void.