'A'isha (RAA) narrated, The Messenger of Allah (ﷺ) used to put his head into (the window of my house) while he was in the mosque (performing I'tikaf) and I would comb his hair. When he was in I'tikaf he would not enter the house except for some need."Agreed upon and the wording is from Al-Bukhari. (IT)
English reference (IT): Book 5, Hadith 721 (IT)
Arabic reference (IT): Book 5, Hadith 701 (IT)