عَنِ الْبَرَاءِ بْنِ عَازِبٍ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ: ((إِذَا أَوَيْتَ إِلَى فِرَاشِكَ فَتَوَضَّأْ وَنَمْ عَلَى شِقِّكَ الْأَيْمَنِ وَقُلْ: اللَّهُمَّ أَسْلَمْتُ وَجْهِيَ إِلَيْكَ، … )) الْحَدِيثَ
It is narrated from Sayyiduna Bara’ bin Azib (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: When you go to your bed, perform ablution, lie on your right side, and recite this supplication: “O Allah, I have submitted my face to You…” .