Bulugh al-Maram 96

None of you should hold his penis with his right hand while urinating, nor wipe himself after answering the call of nature using his right hand, nor breathe into the vessel

"None of you should hold his penis with his right hand while urinating, nor wipe himself after answering the call of nature using his right hand, nor breathe into the vessel."

لاَ يُمْسِكَنَّ أَحَدُكُمْ ذَكَرَهُ بِيَمِينِهِ وَهُوَ يَبُولُ وَلاَ يَتَمَسَّحْ مِنَ الْخَلاَءِ بِيَمِينِهِ وَلاَ يَتَنَفَّسْ فِي الإِنَاءِ ‏"

Narrated by Abu Qatāda Explained

The Prophet (sal Allaahu alayhi wa sallam) said: When any one of you urinates, he must not touch his penis with his right hand, and when he goes to relieve himself he must not wipe himself with his right hand (in the privy), and when he drinks, he must not drink in one breath.

إِذَا بَالَ أَحَدُكُمْ فَلاَ يَمَسَّ ذَكَرَهُ بِيَمِينِهِ وَإِذَا أَتَى الْخَلاَءَ فَلاَ يَتَمَسَّحْ بِيَمِينِهِ وَإِذَا شَرِبَ فَلاَ يَشْرَبْ نَفَسًا وَاحِدًا ‏"

Narrated by Abu Qatāda + 23 other versions

"The Prophet prohibited that a man should touch his penis with his right hand."

نَهَى أَنْ يَمَسَّ الرَّجُلُ ذَكَرَهُ بِيَمِينِهِ ‏

Narrated by Abu Qatāda