The Messenger of Allah (ﷺ) said: My heart is invaded by unmindfulness, and I ask Allah's pardon a hundred times in the day.
Sunan Abi Dawud Book 8, Hadith 100
← Previous Hadith The Prophet (ﷺ) said: He who asks pardon is not a confirmed sinner, even if he returns to his sin seventy times a day.

Sunan Abi Dawud Book 8, Hadith 99 Next Hadith → We counted that the Messenger of Allah (ﷺ) would say a hundred times during a meeting: "My Lord, forgive me and pardon me; Thou art the Pardoning and forgiving One".

Sunan Abi Dawud Book 8, Hadith 101