I was with Ibn Umar at Mina when he passed by a man who was slaughtering a sacrificial camel while it was kneeling. He said, "Make it stand up with its leg tied. That is the practice of Muhammad ﷺ."
حدثنا هشيم أخبرنا يونس أخبرني
كنت مع ابن عمر بمنى فمر برجل وهو ينحر بدنة وهي باركة فقال ابعثها قياما مقيدة سنة محمد ﷺ