Sayyidina Ibn Umar (RA) reported that a man asked, ‘From where do we assume the ihram, 0 Messenger of Allah?” He said, from Dhul Hulayfah, the Syrians from Juhafah, the Najdis from Qarn, and the Yamanis from Yalamlam.”
[Ahmed5087, Bukhari 1525, Muslim 1182, Abu Dawud V37, Nisai 2647, Ibn e Majah 2914]