'Afwa

Sayyidatina`Aishah (ra) reported: 

I asked: "O Messenger of Allaah! If I realize it was Laylat-ul-Qadr, what should I supplicate in it?'' He (saw) replied, "You should supplicate: Allahumma innaka`afuwwun, tuhibbul-`afwa, fa`fu`anni (O Allah, You are Most Forgiving, and You love forgiveness; so forgive me).''

[at-Tirmidhi]