Musnad Ahmad 1153:1930

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from 'Urwah, from 'Aishah, that she used to comb the hair of the Prophet, may God bless him and grant him peace, while he was in I'tikaf. He would extend his head to her, and she was in her chamber, while the Prophet, may God bless him and grant him peace, was in the mosque.