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I saw Ibn `Umar passing by a man who had made his Badana sit to slaughter it. Ibn `Umar said, "Slaughter it while it is standing with one leg tied up as is the tradition of Muhammad."

Ziyad b. Jubair reported that Ibn 'Umar came upon a person who was slaughtering (sacrificing) his camel and had made him kneel down. So he told him to make it stand up festered (and then sacrifice it) according to the Sunnah of the Prophet

I was present with Ibn `Umar 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).

Ibn ‘Umar came upon a man who had made his camel kneel and was sacrificing it, so he told him to make it stand up fettered according to the <i>sunna</i> of Muhammad. Bukhari and Muslim.