رَبِّ إِنِّي ظَلَمْتُ نَفْسِي فَاغْفِرْ لِي
Rabbi inni dhalamtu nafsi faghfir li
My Lord, indeed I have wronged myself, so forgive me.
Musa (AS) said this after accidentally killing a man. He had just committed the gravest mistake of his life — yet his immediate instinct was to turn to Allah, not to run. And Allah forgave him on the spot: "So He forgave him. Indeed, He is the Forgiving, the Merciful" (28:16). No penance, no waiting period. Sincere acknowledgment was enough.
Related Du'as
رَبِّ اغْفِرْ لِي وَتُبْ عَلَيَّ إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيمُ
My Lord, forgive me and accept my repentance. Indeed, You are the Acceptor of Repentance, the Most Merciful.
Sahihلَا إِلَٰهَ إِلَّا أَنتَ سُبْحَانَكَ إِنِّي كُنتُ مِنَ الظَّالِمِينَ
There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers.
Sahihرَبَّنَا آمَنَّا فَاغْفِرْ لَنَا وَارْحَمْنَا وَأَنتَ خَيْرُ الرَّاحِمِينَ
Our Lord, we have believed, so forgive us and have mercy on us, and You are the best of the merciful.
Sahihاللَّهُمَّ إِنِّي ظَلَمْتُ نَفْسِي ظُلْمًا كَثِيرًا وَلَا يَغْفِرُ الذُّنُوبَ إِلَّا أَنْتَ فَاغْفِرْ لِي مَغْفِرَةً مِّنْ عِندِكَ وَارْحَمْنِي إِنَّكَ أَنتَ الْغَفُورُ الرَّحِيمُ
O Allah, I have wronged myself greatly, and none forgives sins except You. So grant me forgiveness from Yourself and have mercy on me. Indeed, You are the Forgiving, the Most Merciful.
Sahih