It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that he said: "We sacrificed, in the company of the Messenger of Allah (peace and blessings be upon him), one camel on behalf of seven people." Then Sayyiduna Jabir (may Allah be pleased with them both) was asked: What is the ruling on a cow? He said: "It is the same as it." The narrator said that Sayyiduna Jabir (may Allah be pleased with them both) was present at the Treaty of Hudaybiyah, and he said: "And on that day we sacrificed seventy camels."
No one narrated this hadith from Ibn Jurayj (may Allah have mercy on him) except Yahya (may Allah have mercy on him).