when Dawud ibn Ali killed al-Mu’alla’ ibn Khunays, Abu ‘Abdillah (a.s.) said the following: “Abu ‘Abd Allah (a.s.) said, ‘I will pray to Allah against whoever has murdered my Mawla (servant) and has seized my property.’ Dawud ibn Ali then said, ‘You threaten me with your prayer! (But I am not afraid).’ Hammad has said that al-Misma’i said that Mu’attib said to me, ‘Abu ‘Abd Allah (a.s.) that night continued his Ruku ’ and Sajdah and, when it was morning, I hear him saying in Sajdah (prostration) “O Lord, I ask You through Your power that is strong, through Your glory that is intense, that has humbled Your creatures, grant favors to Muhammad and his family and seize him (the enemy) in this hour! Seize him in this hour!’ He had not yet raised his head that we heard crying and wailing from the house of Dawud ibn Ali. Abu ‘Abd Allah (a.s.) raised his head and said, ‘I prayed to Allah with a prayer and Allah, the Most Majestic, the Most Holy, sent an angel over him to hit his head with an iron bar that ruptured his bladder and caused his death.’” Note: Dawud ibn Ali was the governor of Madinah during the rule of abu al- ‘Abbas al-Saffah. He ordered al-Mu’alla to identify for him every Shi’a (follower A ’ immah ) of abu ‘Abd Allah (a.s.). He refused saying, ‘Even if they were under my foot I would not raise it to expose them.’ He was murdered and the properties of Abu ‘Abdillah (a.s.) with him was seized.