Imamate Does Not Pass between any Two Brothers after al-Ḥasan and al-Ḥusayn عليهما السلام

And from him, from Muḥammad b. al-Ḥusayn, from ʿAbd al-Raḥmān b. Abī Najrān, from Sulaymān al-Jaʿfarī, from Ḥammād b. ʿĪsā, from a man, from Abī Jaʿfar عليه السلام, who said: “Imamate will not pass between any two brothers after al-Ḥasan and al-Ḥusayn عليهما السلام, but it is for the descendants (of al-Ḥusayn عليه السلام), generation after generation.”