A'isha reported that two persons visited Allah's Messenger (s.a.w.a.) and both of them talked about a thing, of which I am not aware, but that annoyed him and he invoked curse upon both of them and hurled malediction, and when they went out I said:
Allah's Messenger, the good would reach everyone but it would not reach these two. He said: Why so? I said: Because you have invoked curse and hurled malediction upon both of them. He said: Don't you know that I have made condition with my Lord saying thus: O Allah, I am a human being and that for a Muslim upon whom I invoke curse or hurl malediction make it a source of purity and reward.
This hadith has been reported on the authority of A'mash with the same chain of transmitters and the hadith transmitted on the authority of 'Isa (the words are):
" He had a private meeting with them and hurled malediction upon them and cursed them and sent them out."
Abu Huraira reported Allah's Messenger (s.a.w.a.) as saying:
O Allah, I am a human being and for any person amongst Muslims upon whom I hurl malediction or invoke curse or give him whipping make it a source of purity and mercy.
‘Amr b. Abl Qurrah said :
Hudhaifah was in al-Mada’in. He used to mention things which the Messenger of Allah (s.a.w.a.) said to some people from among his Companions in anger. The people who heard from Hudhaifah would go to Salman and tell him what Hudhaifah said. Salman would say: Hudhaifah knows best what he says. Then they would come to Hudhaifah and tell him: We mentioned Salman what you said, but he neither testified you nor falsified you. So Hudhaifah came to salman who was in his vegetable farm, and said : Salman, what prevents you from testifying me of what I heard from the Messenger of Allah (s.a.w.a.) ? Salman said: The Messenger of Allah (s.a.w.a.) sometimes would be angry, and said in anger something to some of his Companions; he would be sometimes pleased and said in pleasure something to some of his Companions. Would you not stop until you create love of some people in the hearts of some people, and hatred of some people in the hearts of some people, and until you generate disagreement and dissension? You know that the Messenger of Allah (s.a.w.a.) addressed, saying : If I abused any person of my people, or cursed him in my anger. I am one of the children of Adam : I become angry as they become angry. He (Allah) has sent me as a mercy for all worlds. (O Allah!) make them (Abuse or curse) blessing for them on the day of judgment! I swear by Allah. You should stop (mentioning these traditions), otherwise I shall writ to ‘Umar.