Dua After Committing a Sin (What to say and do if you commit a sin)

مَا مِنْ عَبْدٍ يُذنِبُ ذَنْباً فَيُحْسِنُ الطُّهُورَ، ثُمَّ يَقُومُ فَيُصَلِّي رَكْعَتَيْنِ، ثُمَّ يَسْتَغْفِرُ اللَّهَ إِلاَّ غَفَرَ اللَّهُ لَهُ

Any servant who commits a sin and as a result, performs ablution, prays two units of prayer i.e. two rakʿas and then seeks Allah’s forgiveness, Allah would forgive him.