Jabir bin Abdullah (may Allah be pleased with them both) said that the Prophet (peace and blessings be upon him) said: "All of Arafah is a standing-place, all of Muzdalifah is a standing-place, all of Mina is a place of sacrifice, and every street of Makkah is a place of sacrifice and a road."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9503