The Prophet (may Allah's peace and blessings be upon him) used to take a ritual bath with water left over from Maymūnah (may Allah be pleased with her)
Authentic hadithعن عبد الله بن عباس رضي الله عنهما أن النبي صلى الله عليه وسلم كان يغتسل بفضل ميمونة رضي الله عنها .
‘Abdullāh ibn ‘Abbās (may Allah be pleased with him) reported: The Prophet (may Allah's peace and blessings be upon him) used to take a ritual bath with water left over from Maymūnah (may Allah be pleased with her).
Explanation
The Prophet (may Allah's peace and blessings be upon him) used to take a ritual bath with the water that remained after his wife Maymūnah had taken a ritual bath
Source · Narrated by Muslim
From the Hadith Encyclopedia (hadeethenc.com).