O Allah, make me among those who turn to You in repentance, and make me among those who are purified.
اللَّهُمَّ اجْعَلْنِي مِنَ التَّوَّابِينَ وَاجْعَلْنِي مِنَ الْمُتَطَهِّرِينَ
Allaahummaj’alnee minat-tawwaabeena waj’alnee minal-mutatahhireen
At-Tirmidhi 1/78. See also Al-Albani, Sahih At- Tirmidhi 1/18.