Sahih al-Bukhari 323
صحيح البخاري#323SahihNarrated Um Salama:While I was lying with the Prophet (ﷺ) under a woolen sheet, I got my menses. I slipped away and put on the clothes for menses. The Prophet (ﷺ) said, "Have you got your menses?" I replied, "Yes." He called me and I slept with him under the woolen sheet
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 6:28