The Messenger of Allah ﷺ said: My heart is invaded by unmindfulness, and I ask Allah's pardon a hundred times in the day. (Using translation from Abū Dāʾūd 1515)
قَالَ رَسُولُ اللهِ ﷺ «إِنَّهُ لَيُغَانُ عَلَى قَلْبِي وَإِنِّي لَأَسْتَغْفِرُ اللهَ كُلَّ يَوْمٍ مِائَةَ مَرَّةٍ»