اَللَّهُمَّ اغْفِرْ لِي خَطِيْئَتِي وَجَهْلِي، وَإِسْرَافِي فِي أَمْرِي، وَمَا أَنْتَ أَعْلَمُ بِهِ مِنِّي، اَللَّهُمَّ اغْفِرْ لِي هَزْلِي وَجِدِّي وَخَطَايَايَ وَعَمْدِي، وَكُلُّ ذَلِكَ عِنْدِي

Allaahummaghfir lee khatee a-tee wa jahlee, wa israafee fee amree, wa maa anta a‛lamu bihi minnee, Allaahumma-ghfir lee hazlee wa jiddee wa khataayaaya wa ‛amdee, wa kullu dhaalika ‛indee.

O Allah, forgive my sin, my ignorance, my excessiveness in my affairs, and whatever You are better aware (of my affairs) than myself. O Allah, grant me forgiveness [of the faults which I committed] jestingly or in earnest, and which I committed inadvertently and deliberately; and indeed, all of these [failings] are in me.

Reference: Bukhari: 6399