"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).'"
فَقَدْتُ رَسُولَ اللَّهِ ﷺ فَظَنَنْتُ أَنَّهُ أَتَى بَعْضَ جَوَارِيهِ فَطَلَبْتُهُ فَإِذَا هُوَ سَاجِدٌ يَقُولُ رَبِّ اغْفِرْ لِي مَا أَسْرَرْتُ وَمَا أَعْلَنْتُ