the Prophet sacrificed two Amlah horned rams, putting his foot on their sides and slaughtering them pronouncing the name of Allah, and saying: Allahu Akbar."" (Sahih ) (Using translation from Nasāʾī 4418)  

أَنَّ نَبِيَّ اللهِ ﷺ «ضَحَّى بِكَبْشَيْنِ أَمْلَحَيْنِ أَقْرَنَيْنِ يَطَأُ عَلَى صِفَاحِهِمَا وَيَذْبَحُهُمَا وَيُسَمِّي وَيُكَبِّرُ»