it wasnarrated that Ibn 'Abbas said:
"We were with the Messenger ofAllah (ﷺ) on a journey, and the (day of) Al-Adha came. We(sacrificed) one camel on behalf of ten (people) and one cow onbehalfof seven." (JA)
English reference (JA): Vol. 4, Book 26, Hadith 3131 (JA)
Arabic reference (JA): Book 26, Hadith 3251 (JA)