Sunan an-Nasa'i 378
سنن النسائي#378SahihIt was narrated from Al-Miqdam bin Shuraih, from his father, that 'Aishah said:"The Messenger of Allah (ﷺ) would put his mouth on the place from which I had drunk, and he would drink from my leftovers when I was menstruating
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 3:30