Sayyidul Istighfār — Master Dua of Forgiveness
اللَّهُمَّ أَنْتَ رَبِّي لَا إِلَهَ إِلَّا أَنْتَ، خَلَقْتَنِي وَأَنَا عَبْدُكَ، وَأَنَا عَلَى عَهْدِكَ وَوَعْدِكَ مَا اسْتَطَعْتُ، أَعُوذُ بِكَ مِنْ شَرِّ مَا صَنَعْتُ، أَبُوءُ لَكَ بِنِعْمَتِكَ عَلَيَّ، وَأَبُوءُ لَكَ بِذَنْبِي فَاغْفِرْ لِي فَإِنَّهُ لَا يَغْفِرُ الذُّنُوبَ إِلَّا أَنْتَ
Allāhumma anta rabbī lā ilāha illā ant, khalaqtanī wa anā 'abduk, wa anā 'alā 'ahdika wa wa'dika mastaṭa't, a'ūdhu bika min sharri mā ṣana't, abū'u laka bini'matika 'alayy, wa abū'u laka bidhanbī faghfir lī fa'innahū lā yaghfirudh-dhunūba illā ant
O Allāh, You are my Lord. There is no god but You. You created me and I am Your servant. I am trying to keep my covenant and promise to You as best I can. I seek refuge in You from the evil I have done. I acknowledge Your blessings and I acknowledge my sin. Forgive me, for there is no one who forgives sins except You.