Musnad Ahmad 27:1930

'Abd al-Razzaq narrated to us, Ma'mar informed us, from al-Zuhri, from Salim, from Ibn 'Umar, who said: A man stood up in the mosque and called out: "From where should we enter into ihram, O Messenger of Allah?" He said: "The people of Medina shall enter into ihram from Dhu al-Hulayfah, the people of al-Sham shall enter into ihram from al-Juhfah, and the people of Najd shall enter into ihram from Qarn." He said: And they claim, or they say, that he said: "And the people of Yemen shall enter into ihram from Yalamlam."