'Uthmansaid:
"I heard the Messenger of Allah (ﷺ) say: 'Do youthinkthat if there was a river in the courtyard of anyone of you, andhebathed in it five times each day, would there be any dirt left onhim?' They said: '(There would be) nothing.' He said: 'Prayertakesaway sins like water takes away dirt.'" (FR)
English reference (FR): Vol. 1, Book 5, Hadith 1397 (FR)
Arabic reference (FR): Book 5, Hadith 1461 (FR)