(3) باب اسْتِغْفَارِ النَّبِيِّ صلى الله عليه وسلم فِي الْيَوْمِ وَاللَّيْلَةِ
Narrated Abu Huraira:
I heard Allah's Messenger (ﷺ) saying." By Allah! I ask for forgiveness from Allah and turn to Him in repentance more than seventy times a day."
Reference: Sahih al-Bukhari 6307
In-book reference: Book 80, Hadith 4
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 75, Hadith 319