'Uthman bin 'Affan (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ said, "He who performs the Wudu' perfectly (i.e., according to Sunnah), his sins will depart from his body, even from under his nails."

[Muslim].

وعن عثمان بن عفان رضي الله عنه قال: قال رسول الله ﷺ: "من توضأ فأحسن الوضوء، خرجت خطاياه من جسده حتى تخرج من تحت أظفاره" ((رواه مسلم)).