Musnad Ahmad 1153:1122

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, from Mansur, from Hilal ibn Yasaf, from ‘Aishah, that she said: I missed the Messenger of Allah, may Allah bless him and grant him peace, so I thought he had gone to some of his slave-girls. I searched for him, and behold, he was prostrating, saying: "My Lord, forgive me what I have kept secret and what I have made public."