Musnad Ahmad 1173:14

Qutaybah ibn Sa'id narrated to us, he said: Layth narrated to us, from Ibn 'Ajlan, from 'Abdullah ibn Muhammad ibn 'Aqil, from al-Rubayyi' bint Mu'awwidh: "That the Messenger of Allah (peace and blessings of Allah be upon him) performed ablution in her presence, and he wiped his head, the entire head, from the back of the hair, every side to the place where the hair grows, without moving the hair from its state."