It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that he said: On the day of Hudaybiyah we slaughtered seventy camels, one camel on behalf of seven people. The Prophet (peace and blessings be upon him) said: "Share in the sacrificial animals."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشركة / 11421