Mishkat al-Masabih 547

ʿĀʾisha also said: ‘While I was menstruating, I would drink and then hand the vessel to the Prophet. He would put his mouth to the place where mine had been and drink. I would eat meat from a bone, while menstruating, then hand it to the Prophet, and he would put his mouth to the place where mine had been.’ Muslim transmitted it. (Graded ṣaḥīḥ.)