Musnad Ahmad 25:402

Muhammad ibn Ja'far narrated to us, Mu'ammar narrated to us, he said: Ibn Tawus informed me, from his father, from Ibn Abbas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) appointed Dhu al-Hulayfah for the people of Medina, al-Juhfah for the people of Syria, Qarn for the people of Najd, and Yalamlam for the people of Yemen. He said: "They are for them and for those who come upon them from others who intend Hajj and Umrah, from wherever they begin, until that reaches the people of Mecca."