ABLUTION REMOVES SINS H 1041 "Whosoever makes his ablution diligently will have his sins removed from his body, even from underneath his nails." R 1041 Muslim with a chain up to Othman the son of 'Affan who related that the Messenger of Allah, praise and peace be upon him, said this.
1026- وعن عثمان بن عفان رضي الله عنه ، قَالَ : قَالَ رسول الله صلى الله عليه وآله وسلم : "من تَوَضَّأ فَأَحْسَنَ الوُضُوءَ ، خَرَجَتْ خَطَايَاهُ مِنْ جَسَدِهِ حَتَّى تَخْرُج مِنْ تَحْتِ أَظْفَارِهِ" رواه مسلم .