Sayyiduna Anas (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) passed by a man who was driving a sacrificial camel. He (peace and blessings be upon him) said: "Ride it." He said: It is a sacrificial animal. He (peace and blessings be upon him) said two or three times: "Ride it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 10207