A man said: "Where should we begin our Hil (Ihram) O Messenger of Allah?" He said: "The people of Al-Madinah begin their Hil (Ihram) from Dhul-Hulaifah, the people from Ash-Sham from Al-Juhfah, and the people of Najd from Qarn." And he (Ibn Umar) said: ("And they say:) "And the people of Yemen from Yalamlam."
Jami` at-Tirmidhi Book 9, Hadith 24