Musnad Ahmad 695:14

'Abd al-Razzaq narrated to us, Ma'mar informed us, from al-Zuhri, from 'Urwah ibn al-Zubayr, from al-Miswar ibn Makhramah and Marwan, they both said: "The Messenger of Allah, peace and blessings of Allah be upon him, garlanded the sacrificial animal and marked it at Dhu al-Hulayfah, and he entered into Ihram for 'Umrah from there. He shaved at al-Hudaybiyah during his 'Umrah, and he commanded his companions to do that. He slaughtered at al-Hudaybiyah before he shaved, and he commanded his companions to do that."