´It was narrated from Ibn 'Abbas, from Maimunah the wife of the Prophet, that :` the Prophet performed ablution with the water left over after she had taken a bath to cleanse herself from sexual impurity.
Related hadith on this topic
Explanation & Benefits
Maulana Ataullah Sajid
In the aforementioned narrations, the name of the Mother of the Believers, radi Allahu anha, is not mentioned.
From this narration, it is understood that she was Hazrat Maymunah, radi Allahu anha.
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 372