Musnad Ahmad 33:691

'Affan narrated to us, Abu 'Awanah narrated to us, Abu Bishr narrated to us, from Sulayman ibn Qays, from Jabir ibn 'Abdullah, who said: "We slaughtered with the Messenger of Allah, may Allah bless him and grant him peace, on the day of al-Hudaybiyah seventy camels. One camel [was shared] by seven [people]."