Hammam bin Munabbih said: Of the ahadith narrated to us by Abi Hurairah from Muhammad the Messenger of Allah (ﷺ) one is this: The Messenger or Allah (ﷺ) said: You should not urinate in standing water, that is not flowing, then wash in it.
Hadith ReferenceSahih Muslim / The Book of Purification / Hadith: 282