Musnad Ahmad 1153:1487

'Ali ibn 'Asim narrated to us, he said: Al-Jurayri informed us, from 'Abdullah ibn Buraydah, from 'Aishah, she said: I said: "O Messenger of Allah, what do you see if I knew [which night is] the Night of Decree, what should I supplicate to my Lord, the Mighty and Majestic, with?" Or: "What should I ask Him?" He said: "Say: O Allah, indeed You love pardon, so pardon me."