Hazrat Ziyad bin Jubair narrates that I saw Sayyiduna Ibn Umar (may Allah be pleased with them) come to a man who had made his sacrificial camel sit down in Mina in order to slaughter it. The Prophet (peace and blessings of Allah be upon him) said: "Make it stand up and, according to the Sunnah of Muhammad (peace and blessings of Allah be upon him), tie one of its legs and then slaughter it." This narration is from Hazrat Ziyad bin Ayyub.