(23) باب مَنْ كَانَ أَهْلُهُ دُونَ الْمِيقَاتِ .
It was narrated from Ibn 'Abbas that the Prophet designated Dhul-Hulaifah as the Miqat for the people of Al-Madinah, Al-Juhfah for the people of Ash-shamham, Yalmlam for the people of Yemen, and Qarn for the people of Najd. They are for them and for those who pass by them who are not of their people, intending to perform Hajj or 'Umrah. If a person's place of residence is within the boundary of they Miqat, then (he should enter Ihram) from where he starts his journey, and this also applies to the people of Makkah.
Reference: Sunan an-Nasa'i 2658
In-book reference: Book 24, Hadith 0
English translation: Vol. 3, Book 24, Hadith 2659