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
رَبَّنَا إِنَّنَا آمَنَّا فَاغْفِرْ لَنَا ذُنُوبَنَا وَقِنَا عَذَابَ النَّارِ
Our Lord, indeed we have believed, so forgive us our sins and protect us from the punishment of the Fire.
Sahihرَبِّ 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.
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.
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.
Sahih