I was present with Ibn ʿUmar at Minah. He passed a man who was sacrificing his camel while it was sitting. He said make it stand and tie its leg ; thus follow the practice (sunnah) of Muhammad (SWAS). (Using translation from Abū Dāʾūd 1768)   

«ابْعَثْهَا قِيَامًا مُقَيَّدَةً سُنَّةَ أَبِي الْقَاسِمِ ﷺ»