Dua — Master of repentance
اللّهُـمَّ اغْفِرْ لي ذَنْبي كُلَّهُ، دِقَّهُ...
اللّهُـمَّ اغْفِرْ لي ذَنْبي كُلَّهُ، دِقَّهُ وَجِلَّهُ، وَأَوَّلَهُ وَآخِرَهُ، وَعَلانِيَتَهُ وَسِرَّهُ
Allahummagh-fir lee thambee kullah, diqqahu wajillah, wa-awwalahu wa-akhirah, waAAalaniyatahu wasirrah
Translation
O Allah, forgive me all of my sins — the small and the great, the first and the last, the public and the private.
When to recite
Recited as a comprehensive supplication seeking forgiveness for all sins.
Source / Reference
Muslim 1/350