Riyad as-Salihin 129 — The Book of Miscellany

Abu Hurairah Narrated from:

Messenger of Allah (ﷺ) said, "When a Muslim or a believer washes his face (in the course of Wudu'), every sin he has committed with his eyes is washed away from his face along with water, or with the last drop of water; when he washes his hands, every sin they wrought is erased from his hands with the water, or with the last drop of water; and when he washes his feet, every sin towards which his feet walked is washed away with water, or with the last drop of water, with the result that he comes out cleansed of all sins".[Muslim].