The Book of Pilgrimage
15/62. Chapter:
It is permissible to share in the sacrifice, and a camel or a cow is sufficient for seven people
Sahih Muslim
وَحَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمٍ، حَدَّثَنَا مُحَمَّدُ بْنُ بَكْرٍ، أَخْبَرَنَا ابْنُ جُرَيْجٍ، أَخْبَرَنَا أَبُو الزُّبَيْرِ، أَنَّهُ سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ، يُحَدِّثُ عَنْ حَجَّةِ النَّبِيِّ، صلى الله عليه وسلم قَالَ فَأَمَرَنَا إِذَا أَحْلَلْنَا أَنْ نُهْدِيَ وَيَجْتَمِعَ النَّفَرُ مِنَّا فِي الْهَدِيَّةِ وَذَلِكَ حِينَ أَمَرَهُمْ أَنْ يَحِلُّوا مِنْ . حَجِّهِمْ فِي هَذَا الْحَدِيثِ .
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 1318eIn-book reference : Book 15, Hadith 393USC-MSA web (English) reference : Book 7, Hadith 3028