"When any one of you urinates, let him not hold his penis in his right hand."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِذَا بَالَ أَحَدُكُمْ فَلاَ يَأْخُذْ ذَكَرَهُ بِيَمِينِهِ  

"The Messenger of Allah ﷺ said: 'When any one of you enters Al-Khala' (the toilet), let him not touch his penis with his right hand.'"  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا دَخَلَ أَحَدُكُمُ الْخَلاَءَ فَلاَ يَمَسَّ ذَكَرَهُ بِيَمِينِهِ