Hadith on Supplication: Whoever recited these words and died in the night will have died upon Al-Fitrah (monotheistic instinct)

Al-Bara ibn Azib reported (رضى الله عنه): The Messenger of Allah (صلى الله عليه وسلم) said: “When you go to bed, perform Wudu’ (ablution) as for prayer, then lie down on your right side and say, ‘O Allah, I submit my face to You, and entrust my affair to You, and commit my back to You, out of hope and fear of You. There is no refuge or place of safety but with You. I believe in the Book that You have revealed, and the Prophet you have sent.’ He (صلى الله عليه وسلم) said further: Whoever recited these words and died in the night will have died upon Al-Fitrah (monotheistic instinct).”

[Sahih Muslim, Book 035, Number 6544]

الْبَرَاءُ بْنُ عَازِبٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ إِذَا أَخَذْتَ مَضْجَعَكَ فَتَوَضَّأْ وُضُوءَكَ لِلصَّلاَةِ ثُمَّ اضْطَجِعْ عَلَى شِقِّكَ الأَيْمَنِ ثُمَّ قُلِ اللَّهُمَّ إِنِّي أَسْلَمْتُ وَجْهِي إِلَيْكَ وَفَوَّضْتُ أَمْرِي إِلَيْكَ وَأَلْجَأْتُ ظَهْرِي إِلَيْكَ رَغْبَةً وَرَهْبَةً إِلَيْكَ لاَ مَلْجَأَ وَلاَ مَنْجَا مِنْكَ إِلاَّ إِلَيْكَ آمَنْتُ بِكِتَابِكَ الَّذِي أَنْزَلْتَ وَبِنَبِيِّكَ الَّذِي أَرْسَلْتَ وَاجْعَلْهُنَّ مِنْ آخِرِ كَلاَمِكَ فَإِنْ مُتَّ مِنْ لَيْلَتِكَ مُتَّ وَأَنْتَ عَلَى الْفِطْرَةِ