It was narrated that Aishah said:"I noticed that the Messenger of Allah (ﷺ) was missing and I thought he had gone to visit one of his concubines, so I looked for him and found him prostrating and saying: 'Rabbighfirli ma asrartu wa ma a'lant (O Allah, forgive me for what (sin) I have concealed and what I have done openly

English translation · Sunan an-Nasa'i