Good Manners and Form (Al-Adab)
Ṣaḥīḥ al-Bukhārī 6128
دَعُوهُ، وَأَهْرِيقُوا عَلَى بَوْلِهِ ذَنُوبًا مِنْ مَاءٍ ـ أَوْ سَجْلاً مِنْ مَاءٍ ـ فَإِنَّمَا بُعِثْتُمْ مُيَسِّرِينَ، وَلَمْ تُبْعَثُوا مُعَسِّرِينَ
daʿūhu, wa-ahrīqūā ʿalā bawlihi dhanūban min māʾin aw sajlan min māʾin fa-innamā buʿithtum muyassirīna, walam tubʿathūā muʿassirīna
Transliteration generated from the Arabic vowel marks
The full narration
Narrated Abu Huraira:A bedouin urinated in the mosque, and the people rushed to beat him. Allah's Messenger (ﷺ) ordered them to leave him and pour a bucket or a tumbler (full) of water over the place where he has passed urine. The Prophet then said, " You have been sent to make things easy (for the people) and you have not been sent to make things difficult for them
Source
Ṣaḥīḥ al-Bukhārī · 6128