´it was narrated that Ibn ‘Abbas said:` “We were with the Messenger of Allah (ﷺ) on a journey, and the (day of) Al-Adha came. We (sacrificed) one camel on behalf of ten (people) and one cow on behalf of seven.”
Hadith Referenceسنن ابن ماجه / كِتَابُ الْأَضَاحِي / 3131
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده حسن