Sahih Muslim Book 45, Hadith 122
I have held covenant with Thee which Thou wouldst not break, so for any believer whom I curse or beat, make that an expiation on the Day of Resurrection.
O Allah, for any believing servant whom I curse make that as a source of nearness to Thee on the Day of Resurrection.
I am a human being and I have made this term with my Lord, the Exalted and Glorious: For any servant amongst Muslims whom I curse or scold, make that a source of purity and reward. This hadith has been narrated on the authority of Ibn Juraij with the same chain of transmitters.