"I would drink when I was menstruating, then I would hand it to the Prophet (ﷺ), and he would put his mouth where mine had been and drink. And I would nibble at a bone on which some bits of meat were left when I was menstruating, then I would give it to the Prophet (ﷺ) and he would put his mouth where my mouth had been."
Sunan an-Nasa'i Book 3, Hadith 32