ʻĀishah (RA) asked the Prophet (S), “O Messenger of Allah, if I knew which night is the night of power, what should I say in it?”
The Prophet (S) replied, “Say…
اللَّهُمَّ إِنَّكَ عَفُوٌّ كَرِيمٌ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي
Allāhumma ʼinnaka ʻafuwwun karīmun
tuḫibbul ʻafwa faʻfu ʻannī
O Allah! Indeed you are one who is always forgiving and merciful, and most generous; You love to forgive and pardon, so forgive and pardon me!
Recorded in Sunan Al-Tirmiḏi.