Narrated Buraydah ibn al-Hasib:

The Prophet (ﷺ) said: If anyone says in the morning or in the evening: "O Allah! You are my Lord; there is no god but You, You have created me, and I am Your servant and hold to Your covenant and promise as much as I can; I seek refuge in You from the evil of what I have done: I acknowledge Your favour to me, and I acknowledge my sin; pardon me, for none but You pardons sins, and dies during the daytime or during the night." he will go to Paradise.

حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا الْوَلِيدُ بْنُ ثَعْلَبَةَ الطَّائِيُّ، عَنِ ابْنِ بُرَيْدَةَ، عَنْ أَبِيهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏

‏ مَنْ قَالَ حِينَ يُصْبِحُ أَوْ حِينَ يُمْسِي اللَّهُمَّ أَنْتَ رَبِّي لاَ إِلَهَ إِلاَّ أَنْتَ خَلَقْتَنِي وَأَنَا عَبْدُكَ وَأَنَا عَلَى عَهْدِكَ وَوَعْدِكَ مَا اسْتَطَعْتُ أَعُوذُ بِكَ مِنْ شَرِّ مَا صَنَعْتُ أَبُوءُ بِنِعْمَتِكَ وَأَبُوءُ بِذَنْبِي فَاغْفِرْ لِي إِنَّهُ لاَ يَغْفِرُ الذُّنُوبَ إِلاَّ أَنْتَ ‏.‏ فَمَاتَ مِنْ يَوْمِهِ أَوْ مِنْ لَيْلَتِهِ دَخَلَ الْجَنَّةَ ‏

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