(1) باب ذِكْرِ نَهْىِ الْجُنُبِ عَنْ الاِغْتِسَالِ، فِي الْمَاءِ الدَّائِمِ
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) forbade urinating into standing water then performing Ghusl with it.
Reference: Sunan an-Nasa'i 399
In-book reference: Book 4, Hadith 4
English translation: Vol. 1, Book 4, Hadith 399