It was narrated from Abu Hurairah that the Messenger of Allah ﷺ forbade urinating into standing water then performing Ghusl with it. (Using translation from Nasāʾī 399)
عَنِ النَّبِيِّ ﷺ أَنَّهُ نَهَى أَنْ يُبَالَ فِي الْمَاءِ الرَّاكِدِ ثُمَّ يُتَوَضَّأَ مِنْهُ