﴿ قَالَ رَبِّ إِنِّى ظَلَمْتُ نَفْسِى فَٱغْفِرْ لِى فَغَفَرَ لَهُۥٓ ۚ إِنَّهُۥ هُوَ ٱلْغَفُورُ ٱلرَّحِيمُ ﴾

“[And] he prayed: O my Sustainer! Verily, I have sinned against myself! Grant me, then, Thy forgiveness!” And He forgave him - for, verily, He alone is truly forgiving, a dispenser of grace.”

(He said: My Lord! Lo! I have wronged my soul) by killing a person, (so forgive me) my sin. (Then He forgave him. Lo! He is the Forgiving, the Merciful) towards he who repents.