"I noticed that the Messenger of Allah (ﷺ) was missing from bed, so I started to look for him, and I thought that he had gone to one of his concubines. Then my hand fell on him when he was prostrating and saying: "Allahummaghfirli ma asrartu wa ma a'lant (O Allah, forgive me for what (sin) I have concealed and what I have done openly).'"
Sunan an-Nasa'i Book 12, Hadith 96
← Previous Hadith "The Messenger of Allah (ﷺ) used to say when bowing and prostrating: 'Subhanaka Allahumma, Rabbana wa bihamdik. Allahumma-ghfirli (Glory be to You O Allah, Our Lord, and praise. O Allah, forgive me," following the command of the Quran.

Sunan an-Nasa'i Book 12, Hadith 95 Next Hadith → "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).'"

Sunan an-Nasa'i Book 12, Hadith 97