In the name of Allah, Most Gracious, Most Merciful.
Abu Hurairah (May Allah be pleased with him) reported: I heard the Messenger of Allah (SAWS) saying: “Say, if there were a river at the door of one of you in which he takes a bath five times a day, would any soiling remain on him?” They replied: “No soiling would be left on him.” The Messenger of Allah (SAWS) said: “That is the five (obligatory) Salat (prayers). Allah obliterates all sins as a result of performing them.” (Al-Bukhari and Muslim).
SAWS: May Allah exalt his mention and protect him from imperfection
Riyaadiss-Saliheen (The Meadows of the Righteous)
By Imam An Nawawi
Chapter 187, Page 309, No 1042