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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
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السيوطي:٢١١٨٨a –

"مَنْ تَوَضَّأَ فَأَحْسَنَ الْوُضُوءَ، خَرَجَتْ خَطَايَاهُ مِنْ جَسَدِه حَتَّى تَخْرُجَ مِنْ تَحْتِ أَظْفَارهِ".  

[حم] أحمد [م] مسلم عن عثمان

See similar narrations below:

Collected by Muslim, Aḥmad
muslim:245 – Muḥammad b. Maʿmar b. Ribʿī al-Qaysī > Abū Hishām al-Makhzūmī > ʿAbd al-Wāḥid / Ibn Ziyād > ʿUthmān b. Ḥakīm > Muḥammad b. al-Munkadir > Ḥumrān > ʿUthmān b. ʿAffān

The Messenger of Allah (way peace be upon him) said: He who performed ablution well, his sins would come out from his body, even coming out from under his nails.  

مسلم:٢٤٥ – حَدَّثَنَا مُحَمَّدُ بْنُ مَعْمَرِ بْنِ رِبْعِيٍّ الْقَيْسِيُّ حَدَّثَنَا أَبُو هِشَامٍ الْمَخْزُومِيُّ عَنْ عَبْدِ الْوَاحِدِ وَهُوَ ابْنُ زِيَادٍ حَدَّثَنَا عُثْمَانُ بْنُ حَكِيمٍ حَدَّثَنَا مُحَمَّدُ بْنُ الْمُنْكَدِرِ عَنْ حُمْرَانَ عَنْ عُثْمَانَ بْنِ عَفَّانَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ تَوَضَّأَ فَأَحْسَنَ الْوُضُوءَ خَرَجَتْ خَطَايَاهُ مِنْ جَسَدِهِ حَتَّى تَخْرُجَ مِنْ تَحْتِ أَظْفَارِهِ  

ahmad:476 – ʿAffān > ʿAbd al-Wāḥid b. Ziyād > ʿUthmān b. Ḥakīm > Muḥammad b. al-Munkadir > Ḥumrānaʿan ʿUthmān b. ʿAffān

The Messenger of Allah ﷺ said: “Whoever does wudooʿ and does wudoo’ well, his sins come out of his body, even from beneath his nails.”  

أحمد:٤٧٦ – حَدَّثَنَا عَفَّانُ حَدَّثَنَا عَبْدُ الْوَاحِدِ بْنُ زِيَادٍ عَنْ عُثْمَانَ بْنِ حَكِيمٍ حَدَّثَنَا مُحَمَّدُ بْنُ الْمُنْكَدِرِ عَنْ حُمْرَانَعَنْ عُثْمَانَ بْنِ عَفَّانَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ مَنْ تَوَضَّأَ فَأَحْسَنَ الْوُضُوءَ خَرَجَتْ خَطَايَاهُ مِنْ جَسَدِهِ حَتَّى تَخْرُجَ مِنْ تَحْتِ أَظْفَارِهِ