Chapter 35: Supplication
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).'"
Sunan Ibn Majah 3850