(19) باب الْمُعْتَكِفِ يُدْخِلُ رَأْسَهُ الْبَيْتَ لِلْغَسْلِ
Narrated `Urwa:
Aisha during her menses used to comb and oil the hair of the Prophet (ﷺ) while he used to be in I`tikaf in the mosque. He would stretch out his head towards her while she was in her chamber.
Reference: Sahih al-Bukhari 2046
In-book reference: Book 33, Hadith 21
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 33, Hadith 262