Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) said that the Prophet (peace and blessings be upon him) said: "I have stood here at Arafah, and all of Arafah is a standing place; I have stood here at Muzdalifah, and all of Muzdalifah is a standing place; and I have sacrificed here at Mina, and all of Mina is a place of sacrifice. So sacrifice at your own encampments."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9458