´It was narrated that 'Aishah said:` "The Messenger of Allah (ﷺ) used to put his mouth on the place where I had drunk from, and he would drink from what was leftover by me, while I was menstruating."
Hadith ReferenceSunan an-Nasa'i / Mention When Ghusal (A Purifying Bath) Is Obligatory And When It Is Not / Hadith: 281