Al-Agharr Al-Muzani (May Allah be pleased with him) said:
The Messenger of Allah (ﷺ) said, "Sometimes I perceive a veil over my heart, and I supplicate Allah for forgiveness a hundred times in a day."[Muslim]. (JA)
App reference (JA): Book 20, Hadith 1 (JA)
Arabic/English book reference (JA): Book 20, Hadith 1869 (JA)