The rise of al-Mahdi with Divine Authority earlier or later will not affect one who has learned who his Imam is

6. al-Husayn ibn Ali al-‘Alawi fromSahl ibn Jumhur from ‘Abd al-‘Azim Ibrahim ‘Abdallah al-Hassani fro al-Hassan ibn al-Husayn al-‘Arni from Ali from Ali ibn Hashim from his father from abu Ja‘far عليه السلام who has said the following. “One who would expecting the coming of our task (the rise of al-Mahdi with Divine Authority) he his not suffered any loss of not dying in the tents of al-Mahdi and in his army.”