Musnad Abu Ya'la al-Mawsili 153:196

Mu'alla ibn Mahdi narrated to us, Abu 'Awanah narrated to us, from Zayd ibn Jubayr, who said: I asked Ibn 'Umar, "From where is it permissible for me to perform 'Umrah?" He said, "The Messenger of Allah (ﷺ) appointed them: for the people of Medina, Dhu al-Hulayfah; for the people of Syria, al-Juhfah; and for the people of Najd, Qarn."