"When any one of you drinks, let him not breathe into the vessel, and when he goes to the toilet let him not touch his penis with his right hand, nor wipe himself with this right hand." (Using translation from Nasāʾī 47)
أَنَّ النَّبِيَّ ﷺ قَالَ إِذَا شَرِبَ أَحَدُكُمْ فَلَا يَتَنَفَّسْ فِي الْإِنَاءِ وَإِذَا دَخَلَ الْخَلَاءَ فَلَا يَتَمَسَّحْ بِيَمِينِهِ وَإِذَا بَالَ فَلَا يَمَسَّ ذَكَرَهُ بِيَمِينِهِ