(15) Muhammad bin Ya’qoob narrated from al-Husayn bin Muhammad from Ja’far bin Muhammad from al-Qassim bin Issma’eel al-Anbari from al-Hasan bin Ali from Ibraheem bin Muhzim from his father that Abu Abdullah as-Sadiq had said when the (Abbasid) rulers had been mentioned before him: “People perished because they hastened this matter (deliverance). Allah does not become hasty just because that people urge on their matters to be achieved. This matter (the appearance of al-Qa’im) has a precise time that it must reach. If it reaches its time, it will occur neither an hour sooner nor an hour later.”