Sahih Bukhari
Sahih Bukhari Volume 003, Book 033, Hadith Number 245.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 33. Retiring To a Masjid for Remembrance Of Allah (I'tikaf)
Narated By 'Aisha : The Prophet used to (put) bend his head (out) to me while he was in Itikaf in the mosque during my monthly periods and I would comb and oil his hair.