Ali bin Abu Talib reported,

In a long hadith, the Prophet ﷺ said between the tashahhud and the taslim, "Allah, forgive me for what I have done before and what I will do later, what I have concealed and what I have made known, what I have done in excess, and what You know better than I do. You are the One who brings forward and You are the One who delays. There is no god but You."

Azami 11030

Sahih

عن علي بن أبي طالب

في حديث طويل يقول النبي ﷺ بين التشهد والتسليم: اللهم اغفر لي ما قدمت، وما أخرت، وما أسررت وما أعلنت وما أسرفت وما أنت أعلم به مني، أنت المقدم، وأنت المؤخر لا إله إلا أنت.

الأعظمي 11030صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Supplications, remembrances, and prayer upon the chosen Prophet ﷺ
Chapter
Supplications of adhan and prayer, and what is related to them
Section
Supplications before the taslim
Numbering
Jami al-Kamil 11030 (2nd edition)
Azami 11030