Sunan an-Nasa'i 397
سنن النسائي#397SahihIt was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:"None of you should urinate into standing water and then perform Ghusl or Wudu' with 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 ZaiIsnaad Sahih
In-book reference: 4:2