This hadeeth comes under the following chapter: HE UPON WHOM ALLAAH'S APOSTLE (SALLALLAAHU ALAYHI WA SALLAM) INVOKED CURSE WHEREAS HE IN FACT DID NOT DESERVE IT, IT WOULD BE A SOURCE OF REWARD AND MERCY FOR HIM
Abu Huraira reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: O Allaah, I make a covenant with Thee against which Thou wouldst never go. I am a human being and thus for a Muslim whom I give any harm or whom I scold or upon whom I invoke curse or whom I beat, make this a source of blessing, purification and nearness to Thee on the Day of Resurrection.