It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that I heard the Prophet (peace and blessings of Allah be upon him) say: The example of the five obligatory prayers is like that of a river flowing at the door of one of you, in which he bathes five times a day; will any dirt remain on his body?
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 14853