The Messenger of Allah ﷺ said, "I seek forgiveness from Allah and turn to Him in repentance a hundred times each day."
حدثنا يزيد قال أخبرنا محمد بن عمرو عن أبي سلمة
قال رسول الله ﷺ إني لأستغفر الله عز وجل وأتوب إليه كل يوم مائة مرة
Its isnad is sahih. Ibn Majah related it with this wording, 2/1254, no. 3815, in Adab, "Seeking Forgiveness." Busiri said, "Its narrators are trustworthy." Bukhari related it with similar wording, 8/83, in Duas, "The Prophet's ﷺ Seeking of Forgiveness," and Muslim, 4/2075, no. 2702, in Dhikr, "The Recommendation of Seeking Forgiveness."