Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “When one of you gets up from his bed and then returns to it, let him brush it off with the end of his garment three times, for he does not know what came to it after him. When he lies down, let him say: In the name of my Lord, I lay down my side and by You I make it rise, and if You take my soul, have mercy upon it, and if you release it, grant it protection the same as given to Your righteous servants. When he awakens, let him say: All praise is due to Allah who granted wellness to my body, returned my spirit, and allowed me to remember Him.”
Source: Sunan al-Tirmidhī 3401
Grade: Jayyid (very good) according to Al-Nawawi
عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ إِذَا قَامَ أَحَدُكُمْ عَنْ فِرَاشِهِ ثُمَّ رَجَعَ إِلَيْهِ فَلْيَنْفُضْهُ بِصَنِفَةِ إِزَارِهِ ثَلَاثَ مَرَّاتٍ فَإِنَّهُ لَا يَدْرِي مَا خَلَفَهُ عَلَيْهِ بَعْدُ فَإِذَا اضْطَجَعَ فَلْيَقُلْ بِاسْمِكَ رَبِّي وَضَعْتُ جَنْبِي وَبِكَ أَرْفَعُهُ فَإِنْ أَمْسَكْتَ نَفْسِي فَارْحَمْهَا وَإِنْ أَرْسَلْتَهَا فَاحْفَظْهَا بِمَا تَحْفَظُ بِهِ عِبَادَكَ الصَّالِحِينَ فَإِذَا اسْتَيْقَظَ فَلْيَقُلْ الْحَمْدُ لِلَّهِ الَّذِي عَافَانِي فِي جَسَدِي وَرَدَّ عَلَيَّ رُوحِي وَأَذِنَ لِي بِذِكْرِهِ
3401 سنن الترمذي كتاب الدعوات
131 المحدث النووي خلاصة حكم المحدث إسناده جيد في الأذكار