Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “When a Muslim or a believer washes his face in ablution, then every sin which he committed with his eyes will be washed away with the last drop of water. When he washes his hands, then every sin which he committed with his hands will be washed away with the last drop of water. When he washes his feet, then every sin which he committed with his feet will be washed away with the last drop of water until he emerges purified from sin.”

Source: Sahih Muslim 244

Grade: Sahih (authentic) according to Muslim

عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ إِذَا تَوَضَّأَ الْعَبْدُ الْمُسْلِمُ أَوْ الْمُؤْمِنُ فَغَسَلَ وَجْهَهُ خَرَجَ مِنْ وَجْهِهِ كُلُّ خَطِيئَةٍ نَظَرَ إِلَيْهَا بِعَيْنَيْهِ مَعَ الْمَاءِ أَوْ مَعَ آخِرِ قَطْرِ الْمَاءِ فَإِذَا غَسَلَ يَدَيْهِ خَرَجَ مِنْ يَدَيْهِ كُلُّ خَطِيئَةٍ كَانَ بَطَشَتْهَا يَدَاهُ مَعَ الْمَاءِ أَوْ مَعَ آخِرِ قَطْرِ الْمَاءِ فَإِذَا غَسَلَ رِجْلَيْهِ خَرَجَتْ كُلُّ خَطِيئَةٍ مَشَتْهَا رِجْلَاهُ مَعَ الْمَاءِ أَوْ مَعَ آخِرِ قَطْرِ الْمَاءِ حَتَّى يَخْرُجَ نَقِيًّا مِنْ الذُّنُوبِ

244 صحيح مسلم كِتَاب الطَّهَارَةِ باب خُرُوجِ الْخَطَايَا مَعَ مَاءِ الْوُضُوءِ