Sahih Bukhari | Volume 1 | Hadith Number 319
Narrated by Zainab bint Abi Salama
Um-Salama said, "I got my menses while I was lying with the Prophet under a woollen sheet. So I slipped away, took the clothes for menses and put them on. Allah's Apostle said, 'Have you got your menses?' I replied, 'Yes.' Then he called me and took me with him under the woollen sheet." Um Salama further said, "The Prophet used to kiss me while he was fasting. The Prophet and I used to take the bath of Janaba from a single pot."