أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، أَنَّ أَعْرَابِيًّا، بَالَ فِي الْمَسْجِدِ فَقَامَ إِلَيْهِ بَعْضُ الْقَوْمِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تُزْرِمُوهُ " . فَلَمَّا فَرَغَ دَعَا بِدَلْوٍ مِنْ مَاءٍ فَصَبَّهُ عَلَيْهِ .
It was narrated from Anas that a Bedouin urinated in the Masjid, and some of the people went after him, but the Messenger of Allah (PBUH) said: "Do not restrain him." When he had finished he called from a bucket (of water) and poured over it. Translation Not Available
Book Ref: Sunan An Nisai Book 2 Hadith 329
Web Ref: Sunan An Nisai Vol 1 Book 2 Hadith 330