Sayyidul Istighfar (Best way to ask forgiveness)

اَللّٰهُمَّ أَنْتَ رَبِّيْ لَا إِلٰهَ إِلَّا أَنْتَ، خَلَقْتَنِيْ وَأَنَا عَبْدُكَ

O Allaah, You are my Lord, none has the right to be worshipped except You, You created me and I am Your servant

Allaahumma 'Anta Rabbee laa 'ilaaha 'illaa 'Anta, khalaqtanee wa 'anaa 'abduka,

وَأَنَا عَلَى عَهْدِكَ وَوَعْدِكَ مَا اسْتَطَعْتُ، أَعُوْذُ بِكَ مِنْ شَرِّ مَا صَنَعْتُ

and I abide to Your covenant and promise as best I can, I take refuge in You from the evil of which I have committed.

wa 'anaa 'alaa 'ahdika wa wa'dika mas-tata'tu, 'a'oothu bika min sharri maa sana'tu,

أَبُوْءُ لَكَ بِنِعْمَتِكَ عَلَيَّ، وَأَبُوْءُ بِذَنْبِيْ

I acknowledge Your favour upon me and I acknowledge my sin,

'aboo'u laka bini'matika 'alayya, wa 'aboo'u bithanbee

فَاغْفِرْ لِيْ فَإِنَّهُ لَا يَغْفِرُ الذُّنُوْبَ إِلَّا أَنْتَ

so forgive me, for verily none can forgive sin except You.

faghfir lee fa'innahu laa yaghfiruth-thunooba 'illaa 'Anta.

Whoever recites this with conviction in the evening and dies during that night shall enter Paradise, and whoever recites it with conviction in the morning and dies during that day shall enter Paradise