From Sahih Bukhari (Hadith 322):
Narrated Zainab bint Abi Salama:Um-Salama said, "I got my menses while I was lying with the Prophet (ﷺ) under a woolen sheet. So I slipped away, took the clothes for menses and put them on. Allah's Messenger (ﷺ) said, 'Have you got your menses?' I replied, 'Yes.' Then he called me and took me with him under the woolen sheet." Um Salama further said, "The Prophet (ﷺ) used to kiss me while he was fasting. The Prophet (ﷺ) and I used to take the bath of Janaba from a single pot
Reference: Bukhari 322