The Prophet ﷺ used to offer as sacrifices, two horned rams, black and white in color, and used to put his foot on their sides and slaughter them with his own hands.  

أَنَّ النَّبِيَّ ﷺ كَانَ يُضَحِّي بِكَبْشَيْنِ أَمْلَحَيْنِ أَقْرَنَيْنِ وَوَضَعَ رِجْلَهُ عَلَى صَفْحَتِهِمَا وَيَذْبَحُهُمَا بِيَدِهِ