It was narrated from ‘Aishah and Abu Hurairah that when the Messenger of Allah ﷺ wanted to offer a sacrifice, he brought two large, fat, horned, black-and-white, castrated rams. He slaughtered one on behalf of his nation, for whoever testified to Allah with monotheism and that he had conveyed (the Message), and he slaughtered the other on behalf of Muhammad and the family of Muhammad ﷺ.

حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَنْبَأَنَا سُفْيَانُ الثَّوْرِيُّ، عَنْ عَبْدِ اللَّهِ بْنِ مُحَمَّدِ بْنِ عَقِيلٍ، عَنْ أَبِي سَلَمَةَ، عَنْ عَائِشَةَ، وَعَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ـ ﷺ ـ كَانَ إِذَا أَرَادَ أَنْ يُضَحِّيَ اشْتَرَى كَبْشَيْنِ عَظِيمَيْنِ سَمِينَيْنِ أَقْرَنَيْنِ أَمْلَحَيْنِ مَوْجُوءَيْنِ فَذَبَحَ أَحَدَهُمَا عَنْ أُمَّتِهِ لِمَنْ شَهِدَ لِلَّهِ بِالتَّوْحِيدِ وَشَهِدَ لَهُ بِالْبَلاَغِ وَذَبَحَ الآخَرَ عَنْ مُحَمَّدٍ وَعَنْ آلِ مُحَمَّدٍ ـ ﷺ ـ .