The Messenger of Allah (ﷺ) defined

The meeqat of the people of Madinah as Dhul-Hulaifah; that of the people of Sham (Syria) as al-Juhfah; that of the people of Najd as Qarn; and that of the people of Yemen as Yalamlam. And he said: "And these meeqats are for the people at those very places, and besides them for those who come through those places with the intention of performing Hajj and 'Umrah; and then (for those who are living within these boundaries} they can enter ihram from the place they set out, and so on, and the people of Makkah (can enter ihram from where they start)."