Qurbani Sunnat Ibrahimi
Religion has always been the same in the sight of God since the very beginning and so were the ibadah. Qurbani has been there since the time of Adam (sws), however, it was started on a big scale as a ritual through Hazrat Abraham (Sws). For further details, please refer to the video below from 7:18 to 12:29 https://youtu.be/7BoITAhTLZQ?t=438