قَالَ رَسُولُ اللهِ ﷺ: «إنَّهُ لَيُغَانُ عَلَى قَلْبِي، وَ إنِّي لأسْتَغْفِرُ اللهَ فِي اليَوْمِ مِئَةَ مَرَّةٍ»

The Messenger of Allāh \pbuh said: “Verily my heart becomes preoccupied, and verily I seek Allāh's forgiveness a hundred times a day.”

Reference: The Messenger of Allāh \pbuh said: “Verily my heart becomes preoccupied, and verily I seek Allāh's forgiveness a hundred times a day.” Muslim (#2702, 4/2075). Also see _al-Jāmiʿ al-Uṣūl li-Ahādīth al-Rasūl_ (4/386).