عن عثمان بن عفان رضى الله عنه قال قال رسول الله صلى الله عليه وسلم من توضأ فأحسن الوضوء خرجت خطاياه من جسده حتى تخرج من تحت أظفاره. رواه مسلم (الترغيب والترهيب 1/210)
Hazrat Uthmaan (Radhiyallahu Anhu) reports that Rasulullah (Sallallahu Alaihi Wasallam) said: “Whoever performs wudhu, and does it in a perfect manner, his (minor) sins are removed (and washed away) from his body to the extent that they fall off from beneath his fingernails.”