We performed Hajj along with Allah's Messenger (ﷺ), and we sacrificed a camel on behalf of seven persons, and a cow on behalf of seven persons.
Sahih Muslim Book 15, Hadith 391
← Previous Hadith We set out in the state of Ihram for Hajj along, with Allah's Messenger (ﷺ). He commanded us that seven persons should join in a camel and a cow for offering sacrifice.

Sahih Muslim Book 15, Hadith 390 Next Hadith → We joined Allah's Apostle (may pea, @. e be upon him) in Hajj and Umra and seven persons shared in the sacrifice of an animal. A person said to Jabir (Allah be pleased with him): Can seven persons share in the sacrifice of al-Badnah (a camel) as he shares in al- Jazur (a cow)? He, (Jabir) said: It (al-Jazur) is nothing but one among the budun. Jabir was present at Hudaibiya and he said: We sacrificed on that day seventy camel, and seven men shared in each sacrifice (of camel).

Sahih Muslim Book 15, Hadith 392