(62) باب الاِشْتِرَاكِ فِي الْهَدْىِ وَإِجْزَاءِ الْبَقَرَةِ وَالْبَدَنَةِ كُلٍّ مِنْهُمَا عَنْ سَبْعَةٍ
Jabir b. 'Abdullah (Allah be pleased with them), describing the Hajj of Allah's Apostle (ﷺ) said:
He (the Holy Prophet) commanded us as we had entered into the state of Ihram to sacrifice the animals (as a rite of Hajj) and a group (of person; amongst us, i. e. seven) shared in the sacrifice of one (camel or cow), and it happened at that time when he commanded them to put off Ihram for Hajj (after performing 'Umra).
Reference: Sahih Muslim 1318 e
In-book reference: Book 15, Hadith 393
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 3028