It is narrated from Sayyidah Aishah (may Allah be pleased with her) that she said: I said, "O Messenger of Allah, if I come to know which night is Laylat al-Qadr, what should I say in it?" He (peace and blessings be upon him) said: "Say: 'Allahumma innaka 'afuwwun tuhibbul-'afwa fa'fu 'anni' (O Allah, indeed You are Most Pardoning and You love to pardon, so pardon me)." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it.