Maliks Muwatta Book 23, Hadith Number 9.

Section : Sharing Sacrificial Animals and How Many Share a Cow or Camel.

Yahya related to me from Malik from Abu’z-Zubayr al-Makki that Jabir ibn Abdullah said, “We sacrificed with the Messenger of Allah, may Allah bless him and grant him peace, in the year of Hudaybiya, a camel between seven people, and a cow between seven people.”