1. Purification

١۔ كِتَابُ الطَّهَارَةِ

1.114 [Machine] The reward of those who perform ablution and perfect their ritual purification

١۔١١٤ ثَوَابُ مَنْ تَوَضَّأَ فَأَحْسَنَ الْوُضُوءَ

nasai-kubra:173Qutaybah b. Saʿīd > Mālik > Hishām b. ʿUrwah from his father > Ḥumrān > ʿUthmān

"I heard the Messenger of Allah ﷺ say: 'There is no man who performs Wudu' and does it well, then prays, but when he prays it, he will be forgiven whatever (sins he commits) between that and the next prayer." (Using translation from Nasāʾī 146)  

الكبرى للنسائي:١٧٣أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ عَنْ مَالِكٍ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ حُمْرَانَ أَنَّ عُثْمَانَ قَالَ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «مَا مِنَ امْرِئٍ يَتَوَضَّأُ فَيُحْسِنُ وُضُوءَهُ ثُمَّ يُصَلِّي الصَّلَاةَ إِلَّا غُفِرَ لَهُ مَا بَيْنَهُ وَبَيْنَ الصَّلَاةِ الْأُخْرَى حَتَّى يُصَلِّيَهَا»