Hadith
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَبْدِ الْوَهَّابِ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ ثَابِتٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ أَعْرَابِيًّا، بَالَ فِي الْمَسْجِدِ، فَقَامُوا إِلَيْهِ، فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لا تُزْرِمُوهُ ". ثُمَّ دَعَا بِدَلْوٍ مِنْ مَاءٍ فَصُبَّ عَلَيْهِ.
Narrated Anas bin Malik:A bedouin urinated in the mosque and the people ran to (beat) him. Allah's Messenger (ﷺ) said, "Do not interrupt his urination (i.e. let him finish)." Then the Prophet (ﷺ) asked for a tumbler of water and poured the water over the place of urine
Sahih
Sahih al-Bukhari 6025 ·Book 78, Hadith 56·Also available on sunnah.com·