It is narrated from Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When one of you rinses his mouth, whatever (sin) had touched his mouth falls away; when he washes his face, whatever had touched his face falls away; when he washes his hands, whatever had touched his hands falls away; and when he washes his feet, whatever had touched his feet falls away." At this a man said: O Abu Umamah, look at what you are narrating! We kept the company of the Messenger of Allah (peace and blessings be upon him), yet we never heard him (peace and blessings be upon him) say what you are saying. Abu Umamah (may Allah be pleased with him) said: "Had I heard it only once or twice, I would not have narrated it."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7952