Allāhumma anta rabbī lā ilāha illā anta
khalaqtanī wa anā ʿabduka
wa anā ʿalā ʿahdika wa waʿdika mā staṭaʿtu
aʿūdhu bika min sharri mā ṣanaʿtu
abūʾu laka biniʿmatika ʿalayya wa abūʾu bidhanbī
faghfir lī fa-innahu lā yaghfiru dh-dhunūba illā anta
Morning · Evening
The finest way of asking forgiveness
Allāhumma anta rabbī lā ilāha illā anta
khalaqtanī wa anā ʿabduka
wa anā ʿalā ʿahdika wa waʿdika mā staṭaʿtu
aʿūdhu bika min sharri mā ṣanaʿtu
abūʾu laka biniʿmatika ʿalayya wa abūʾu bidhanbī
faghfir lī fa-innahu lā yaghfiru dh-dhunūba illā anta
Source: Bukhārī 6306 · Ḥiṣn al-Muslim, Sayyid al-istighfār