It was narrated from ‘Aishah that she said: “O Messenger of Allah, what do you think I should say in my supplication, if I come upon Laylatul-Qadr?” He said: “Say: ‘Allahumma innaka ‘afuwwun tuhibbul-‘afwa, fa’fu ‘anni (O Allah, You are Forgiving and love forgiveness, so forgive me).’

Grade: Sahih (Darussalam)

DUA IN ARABIC:
In Arabic this dua is written,

اللَّهُمَّ إِنَّكَ عَفُوٌّ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي

Transliteration: Allahumma innaka afuwwun tuhibbul afwa fa’fu annee

ENGLISH TRANSLATION OF THE DUA:
The translation of this dua in english is, “O Allah, You are Forgiving and love forgiveness, so forgive me” or “O Allah, You are Pardoning and love to pardon, so pardon me
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