(6) باب الصَّلَوَاتُ الْخَمْسُ كَفَّارَةٌ
Narrated Abu Huraira:
I heard Allah's Messenger (ﷺ) saying, "If there was a river at the door of anyone of you and he took a bath in it five times a day would you notice any dirt on him?" They said, "Not a trace of dirt would be left." The Prophet (ﷺ) added, "That is the example of the five prayers with which Allah blots out (annuls) evil deeds."
Reference: Sahih al-Bukhari 528
In-book reference: Book 9, Hadith 7
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 10, Hadith 506