اللَّهُمَّ إِنَّكَ عَفُوٌّ كَرِيمٌ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي
Allahumma innaka 'Afuwwun Karimun tuhibbul-'afwa fa'fu 'anni
O Allah, You are the Pardoner, the Most Generous, and You love to pardon, so pardon me.
This expanded version adds "Karim" (the Most Generous) to the du'a Aisha (RA) was taught for Laylatul Qadr. Al-'Afuww means the One who erases sins completely — not just forgives them, but wipes them out as though they never existed.
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.
Sahihأَسْتَغْفِرُ اللَّهَ الَّذِي لَا إِلَٰهَ إِلَّا هُوَ الْحَيُّ الْقَيُّومُ وَأَتُوبُ إِلَيْهِ
I seek the forgiveness of Allah, there is no deity except Him, the Ever-Living, the Sustainer, and I repent to Him.
Sahihاللَّهُمَّ أَنْتَ رَبِّي لَا إِلَٰهَ إِلَّا أَنْتَ خَلَقْتَنِي وَأَنَا عَبْدُكَ وَأَنَا عَلَى عَهْدِكَ وَوَعْدِكَ مَا اسْتَطَعْتُ أَعُوذُ بِكَ مِنْ شَرِّ مَا صَنَعْتُ أَبُوءُ لَكَ بِنِعْمَتِكَ عَلَيَّ وَأَبُوءُ بِذَنْبِي فَاغْفِرْ لِي فَإِنَّهُ لَا يَغْفِرُ الذُّنُوبَ إِلَّا أَنْتَ
O Allah, You are my Lord. There is no deity except You. You created me and I am Your servant. I uphold Your covenant and promise as best I can. I seek refuge in You from the evil I have done. I acknowledge Your blessings upon me, and I confess my sins. Forgive me, for none forgives sins but You.
Sahihاللَّهُمَّ اغْفِرْ لِي مَا قَدَّمْتُ وَمَا أَخَّرْتُ وَمَا أَسْرَرْتُ وَمَا أَعْلَنْتُ وَمَا أَسْرَفْتُ وَمَا أَنْتَ أَعْلَمُ بِهِ مِنِّي
O Allah, forgive me for what I have sent ahead and what I have left behind, what I have concealed and what I have made public, where I have transgressed, and what You know about me more than I do.
Sahih