(80) باب الْمُعْتَكِفِ يَدْخُلُ الْبَيْتَ لِحَاجَتِهِ
'Aishah said:
The Messenger of Allah (ﷺ) used to observe I'tikaf in the mosque and put his head near me through the opening of the apartment, and I would wash his head. Musaddad said: "And I would comb it while I was menstruating."
Reference: Sunan Abi Dawud 2469
In-book reference: Book 14, Hadith 157
English translation: Book 13, Hadith 2463