Allāhummaj`alnī minat-tawwābīna waj`alnī minal-mutaṭahhirīn. O Allah, make me among those who turn to You in repentance, and make me among those who are purified. Reference: At-Tirmidhi 1/78. See also Al-Albani, Sahih At- Tirmidhi 1/18