((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 rakAAas) and then seeks Allah’s forgiveness, Allah would forgive him.)
Abu Dawud 2/86, At-Tirmidhi 2/257. Al-Albani graded it authentic in Sahih Abu Dawud 1/283.