اللَّهُمَّ اغْفِرْ لِي ذَنْبِي كُلَّهُ، دِقَّهُ وَجِلَّهُ، وَأَوَّلَهُ وَآخِرَهُ، وَعَلَانِيَتَهُ وَسِرَّهُ
Allahumma-ghfir li dhanbi kullahu, diqqahu wa jillahu, wa awwalahu wa akhirahu, wa 'alaniyyatahu wa sirrahu
اللهم اغفر لي ذنبي كله، دقه وجله، وأوله وآخره، وعلانيته وسره
Recite in sujood or during personal supplication
This comprehensive istighfar covers all types of sins in all times and conditions.