It is narrated from Abu Huraira, may Allah be pleased with him, that he heard the Messenger of Allah, peace and blessings be upon him, saying: "If there were a river at the door of one of you in which he bathed five times a day, do you think any dirt would remain on him?" They replied: "No dirt would remain." He said: "That is the example of the five daily prayers. Allah wipes away sins with them."