Sahih Muslim , Book 15, Hadith 393 (In-Book) ⓘ

Jabir b. 'Abdullah (Allah be pleased with them), describing the Hajj of Allah's Apostle 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).

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 ‏.‏