Putting right hand under right cheek on sleeping Sahih al-Bukhari 6314
Arabic hadith text
حَدَّثَنِي مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ عَبْدِ الْمَلِكِ، عَنْ رِبْعِيٍّ، عَنْ حُذَيْفَةَ ـ رضى الله عنه قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلمإِذَا أَخَذَ مَضْجَعَهُ مِنَ اللَّيْلِ وَضَعَ يَدَهُ تَحْتَ خَدِّهِ ثُمَّ يَقُولُ " اللَّهُمَّ بِاسْمِكَ أَمُوتُ وَأَحْيَا ". وَإِذَا اسْتَيْقَظَ قَالَ " الْحَمْدُ لِلَّهِ الَّذِي أَحْيَانَا بَعْدَ مَا أَمَاتَنَا وَإِلَيْهِ النُّشُورُ "
Translation
Narrated Hudhaifa
When the Prophet (ﷺ) went to bed at night, he would put his hand under his cheek and then say, "Allahumma bismika amutu wa ahya," and when he got up, he would say, "Al-Hamdu lil-lahi al-ladhi ahyana ba'da ma amatana, wa ilaihi an-nushur."