The Messenger of Allah ﷺ said, "When a Muslim servant performs ablution and washes his face, every sin he committed with his eyes flows out from his face along with the water, or with the last drop of water. When he washes his hands, every sin his hands committed flows out from them along with the water, or with the last drop of water. When he washes his feet, every sin his feet walked toward flows out along with the water, or with the last drop of water, until he emerges cleansed of all sins."
أن رسول الله ﷺ قال: إذا توضأ العبد المسلم فغسل وجهه خرجت من وجهه كل خطيئة نظر إليها بعينيه مع الماء، (أو مع آخر قطر الماء)، فإذا غسل يديه خرجت من يديه كل خطيئة بطشتها يداه مع الماء (أو مع آخر قطر الماء)، فإذا غسل رجليه خرجت كل خطيئة مشتها رجلاه مع الماء (أو مع آخر قطر الماء)، حتى يخرج نقيا من الذنوب.