اَللَّهُمَّ اغْفِرْ لِي مَا أَسْرَرْتُ وَمَا أَعْلَنْتُ وَمَا أَخْطَأْتُ وَمَا تَعَمَّدْتُ وَمَا عَلِمْتُ وَمَا جَهِلْتُ

Allaahummagfirli maa asrartu wa maa a’alantu wa maa akhtaa’-tu wa maa ta’ammadtu wa maa ‘alimtu wa maa jahiltu

O Allah, grant me forgiveness from the fault which I committed in privacy or in public, which I mistakenly did, which I did deliberately, which I did knowingly and which I did unknowingly.

Reference: Sahih (Ibn al-Qayyim). Al Wabilus Sayyib: P. 199