Abu Hurairah reported: The Messenger of Allah said, “When a Muslim, or a believer, washes his face (in the course of Wudu’), every sin which he committed with his eyes, will be washed away from his face with water, or with the last drop of water; when he washes his hands, every sin which is committed by his hands will be effaced from his hands with the water, or with the last drop of water; and he washes his feet, every sin his feet committed will be washed away with the water, or with the last drop of water; until he finally emerges cleansed of all his sins.” (Muslim)

Abu Hurairah also reported that the Messenger of Allah said, “Shall I not tell you something by which Allah effaces the sins and elevates ranks (in Paradise)?” The Companions said; “Certainly, O Messenger of Allah.” He said, “Performing the wudu’ thoroughly in spite of difficult circumstances, walking with more paces to the mosque, and waiting for the next Salah (the prayer) after observing Salah; and that is Ar-Ribat, and that is Ar-Ribat (showing perseverance).” (Muslim)