Ayesha reported,

I would drink from the cup while I was menstruating, then hand it to the Prophet ﷺ, and he would place his mouth on the very spot where mine had been and drink from it. I would also gnaw the meat off a bone while menstruating, then hand it to the Prophet ﷺ, and he would place his mouth on the very spot where mine had been.

Nasai 380

Sahih

أخبرنا محمود بن غيلان قال حدثنا وكيع قال حدثنا مسعر وسفيان عن المقدام بن شريح عن أبيه

عن عائشة قالت

كنت أشرب من القدح وأنا حائض فأناوله النبي ﷺ فيضع فاه على موضع في فيشرب منه وأتعرق من العرق وأنا حائض فأناوله النبي ﷺ فيضع فاه على موضع في

النسائي 380صحيح
Contents
Reference
Commentary
Ayat
Collection
Sunan Nasai Sughra
Book
Menstruation and istihadah
Chapter
Benefiting from the leftover water of a menstruating woman
Numbering
Darussalam 380
Nasai 380