Chapter 9: Times of the Prayers
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."
Sahih al-Bukhari 528