Yahya related to me from Malik from Hisham ibn Urwa from hisfather that A'isha, the wife of the Prophet, may Allah bless him andgrant him peace, said, "I used to comb the head of the Messenger ofAllah, may Allah bless him and grant him peace, while I wasmenstruating."
USC-MSA web (English) reference: Book 2, Hadith 104
Arabic reference: Book 2, Hadith 133