أَسْتَغْفِرُ اللَّهَ وَأَتُوبُ إِلَيْهِ
Astaghfirullaha wa atubu ilayh
I seek Allah's forgiveness and I repent to Him. (The Prophet ﷺ used to say this more than 100 times a day.)
Al-Agharr al-Muzani (RA) narrated that the Prophet ﷺ used to seek Allah's forgiveness more than 100 times in a single day. Despite being forgiven all his past and future sins, he ﷺ maintained this practice out of gratitude and humility.
Related Du'as
لَا إِلَٰهَ إِلَّا أَنتَ سُبْحَانَكَ إِنِّي كُنتُ مِنَ الظَّالِمِينَ
There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers.
Sahihاللَّهُمَّ إِنَّكَ عَفُوٌّ كَرِيمٌ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي
O Allah, You are the Pardoner, the Most Generous, and You love to pardon, so pardon me.
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 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