The Prophet ﷺ saw a Bedouin making water in the mosque and told the people not to disturb him. When he finished, the Prophet ﷺ asked for some water and poured it over (the urine).
أَنَّ النَّبِيَّ ﷺ رَأَى أَعْرَابِيًّا يَبُولُ فِي الْمَسْجِدِ فَقَالَ دَعُوهُ حَتَّى إِذَا فَرَغَ دَعَا بِمَاءٍ فَصَبَّهُ عَلَيْهِ
A Bedouin urinated in the mosque. Some of the persons stood up (to reprimand him or to check him from doing so), but the Messenger of Allah ﷺ said: Leave him alone; don't interrupt him. He (the narrator) said: And when he had finished, he called for a bucket of water and poured it over.
أَنَّ أَعْرَابِيًّا بَالَ فِي الْمَسْجِدِ فَقَامَ إِلَيْهِ بَعْضُ الْقَوْمِ فَقَالَ رَسُولُ اللَّهِ ﷺ دَعُوهُ وَلاَ تُزْرِمُوهُ قَالَ فَلَمَّا فَرَغَ دَعَا بِدَلْوٍ مِنْ مَاءٍ فَصَبَّهُ عَلَيْهِ