Amr bin Shu'ayb narrates from his father, and he from his grandfather (may Allah be pleased with him), that the Messenger of Allah (peace and blessings be upon him) "appointed Dhu al-Hulayfah for the people of Madinah, al-Juhfah for the people of Sham, Yalamlam for the people of Yemen and the people of Tihamah, Qarn for the people of Ta'if and Najd, and Dhat Irq for the people of Iraq."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8916