Muhammad b. Musa b. al-Mutawakkil (rh) narrated to us. He said: Muhammad b. Yahya al-`Attar narrated to us. He said: Ahmad b. Muhammad b. `Isa narrated to us from `Ali b. al Hakam from `Umar b. Hafs from Ziyad b. al-Mundhir from Salim b. Abu Ja`dah. he said
I heard Ka`b al Ahbar say: It is in our book that a man from the offspring of Muhammad, the Messenger of Allah (s) will be killed and the sweat of the riding animals of his companions shall not dry until they have entered Paradise and been embraced by the dark-eyed beauties. Then al-Hasan (as) passed by us and we said: Is he this [one]? He said: No. Then al-Husayn (as) passed by us and we said: Is he this [one]? He said: Yes.