Sahih al-Bukhari 528
صحيح البخاري#528SahihNarrated 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 9:7