Sunan an-Nasa'i 54
سنن النسائي#54SahihIt was narrated that Anas bin Malik said:"A Bedouin urinated in the Masjid, and the Prophet (ﷺ) ordered that a bucket (be brought) and poured over it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 1:54