The Prophet (ﷺ) said to 'Aa'ishah (RA): You say -
اَللَّهُمَّ إِنَّكَ عَفُوٌّ كَرِيمٌ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي
Pronunciation
Allaahumma innaka 'afuwwun karim, tuhibbul-'afwa, fa'fu 'anni
Meaning
O Allah, You are Most Forgiving, Generous. You love forgiveness; so forgive me.
Source: Sahih (Albani). Tirmidhi: 3513
Read the hadith
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا جَعْفَرُ بْنُ سُلَيْمَانَ الضُّبَعِيُّ، عَنْ كَهْمَسِ بْنِ الْحَسَنِ، عَنْ عَبْدِ اللَّهِ بْنِ بُرَيْدَةَ، عَنْ عَائِشَةَ، قَالَتْ قُلْتُ يَا رَسُولَ اللَّهِ أَرَأَيْتَ إِنْ عَلِمْتُ أَىُّ لَيْلَةٍ لَيْلَةُ الْقَدْرِ مَا أَقُولُ فِيهَا قَالَ " قُولِي اللَّهُمَّ إِنَّكَ عَفُوٌّ كَرِيمٌ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي " . قَالَ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
Aishah narrated: “I said: ‘O Messenger of Allah, what is your view if I know when the Night of Al-Qadr is, then what should I say in it?” He said: ‘Say: “O Allah, indeed You are Pardoning, [Generous,] You love pardon, so pardon me (Allāhumma innaka `Afuwwun [Karīmun], tuḥibbul-`afwa fa`fu `annī).’” [Sahih (Albani). Tirmidhi: 3513]
Duas from IslamicAPI's Masnun Dua dataset (based on the Quran, hadith, Hisnul Muslim and Rahe Belayat). See the dataset