Hadith: When a Muslim—or a believer—performs ablution, and he washes his face, every sin he has looked at with his eyes comes out of his face with the water or with the last drop of water

عَنْ أَبِي هُرَيْرَةَ رَضيَ اللهُ عنهُ أَنَّ رَسُولَ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ:
«إِذَا تَوَضَّأَ الْعَبْدُ الْمُسْلِمُ -أَوِ 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 مِنَ الذُّنُوبِ».
[صحيح] - [رواه مسلم] - [صحيح مسلم: 244]

Abu Hurayrah (may Allah be pleased with him) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) said:
"When a Muslim—or a believer—performs ablution, and he washes his face, every sin he has looked at with his eyes comes out of his face with the water or with the last drop of water. When he washes his hands, every sin he has struck with his hands comes out of his hands with the water or with the last drop of water. When he washes his feet, every sin his feet walked towards comes out with the water or with the last drop of water—until he comes out cleansed of sins."
[Authentic hadith] - [Narrated by Muslim] - [Sahih Muslim - 244]

Explanation

The Prophet (may Allah's peace and blessings be upon him) clarified that when a Muslim or a believer performs ablution and washes his face during the ablution, every minor sin he looked at with his eyes comes out of his face with the water falling after washing or with the last drop of water. When he washes his hands, every minor sin he committed with his hands comes out of his hands with the water or with the last drop of water. When he washes his feet, every minor sin his feet walked towards comes out with the water or with the last drop of water, until he comes out cleansed of minor sins by the end of ablution.