It was narrated from Al-Hakam bin 'Amr that the Messenger of Allah ﷺ forbade a man from performing Wudu' with the leftovers of a woman's (water for) Wudu'.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى أَنْ يَتَوَضَّأَ الرَّجُلُ بِفَضْلِ وَضُوءِ الْمَرْأَةِ