It was narrated from 'Aishah that she used to comb the hair of the Messenger of Allah (ﷺ) when she was menstruating and he was performing I'tikaf. He would put his head out to her while she was in her room.
Sunan an-Nasa'i Book 3, Hadith 39
← Previous Hadith "The Messenger of Allah (ﷺ) used to lay his head in the lap of one of us and recite Qur'an while she was menstruating, and one of us would take the mat to the Masjid and spread it out when she was menstruating."

Sunan an-Nasa'i Book 3, Hadith 38 Next Hadith → "The Prophet (ﷺ) would put his head out while he was performing I'tikaf and I would wash it, while I was menstruating."

Sunan an-Nasa'i Book 3, Hadith 40