What did the Prophet Muhammad (saw) say about not urinating in standing water that is not flowing and washing in it?
 Hammam b. Munabbih said:                      Of the ahadith narrated to us by Abfi Huraira from Muhammad the Messenger of Allah (may peace be upon him) one is this: The Messenger or Allah (may peace be upon him) said: You should not urinate in standing water, that is not flowing, then wash in it.