"The Prophet (ﷺ) would put his head out while he was in I'tikaf and I would wash it, while I was menstruating."
Sunan an-Nasa'i Book 1, Hadith 276
← Previous Hadith "The head of the Messenger of Allah (ﷺ) would rest in the lap of one of us when she was menstruating, and he would recite Qur'an."

Sunan an-Nasa'i Book 1, Hadith 275 Next Hadith → "The Prophet (ﷺ) would put his head out for me while he was performing I'tikaf and I would wash it, when I was menstruating." Mujawir ("next door") here means while performing I'tikaf.

Sunan an-Nasa'i Book 1, Hadith 277