One of his supplications
Nahj al-Balāgha|Volume 1|Book 1|Chapter 78
ومن كلمات له (عليه السلام) كان يدعوبها
Supplications of Amīr al-mu’minin.
اللَّهُمَّ اغْفِرْ لِي مَا أَنْتَ أَعْلَمُ بِهِ مِنِّي، فَإِنْ عُدْتُ فَعُدْ لي بِالْمَغْفِرَةِ.
O my Allāh! Forgive me what Thou knowest about me more than I do. If I return (to the sins) Thou return to forgiveness.
اللَّهُمَّ اغْفِرْ لِي مَا وَأَيْتُ مِنْ نَفْسِي، وَلَمْ تَجِدْ لَهُ وَفَاءً عِنْدي.
My Allah forgive me what I had promised to myself but Thou didst not find its fulfilment with me.
اللَّهُمَّ اغْفِرْ لِي مَا تَقَرَّبْتُ بِهِ إِلَيْكَ بِلِسَانِي ثُمَّ خَالَفَهُ قَلْبِي.
My Allah forgive me that with what I sought nearness to Thee with my tongue but my heart opposed and did not perform it.
اللَّهُمَّ اغْفِرْ لِي رَمَزَاتِ الاْلْحَاظِ وَسَقَطَاتِ الاْلْفَاظِ وَشَهَوَاتِ الْجَنَانِ ، وَهَفَوَاتِ اللِّسَانِ.
My Allah forgive me winking of the eye, vile utterances, desires of the heart and errors of speech.