Musannaf Ibn Abi Shayba 21:69

Yazid ibn Harun narrated to us, he said: Kahmas ibn al-Hasan informed us, from Abdullah ibn Buraydah, he said: Aisha said: "If I knew which night was the Night of Decree (Laylat al-Qadr), my most frequent supplication in it would be to ask Allah for pardon (al-'afw) and well-being (al-'afiyah)."