The Messenger of Allah ﷺ would hand me a vessel and I would drink from it while I was menstruating. Then I would give it back to him, and he would seek out the exact spot where my mouth had been and place it against his own.
أخبرنا محمد بن منصور قال حدثنا سفيان عن مسعر عن المقدام بن شريح عن أبيه قال سمعت
كان رسول الله ﷺ يناولني الإناء فأشرب منه وأنا حائض ثم أعطيه فيتحرى موضع فمي فيضعه على فيه
[Sahih] See the two preceding hadiths. It is also found in Kubra, hadith no. 274.