Sunan Abi Dawud 1737
سنن أبي داود#1737SahihIbn Umar said :The Messenger of Allah (SWAS) appointed the following places for putting on Ihram : Dhul al-Hulaifah for the people of Madina, al-Juhfah for the people of Syria and al-Qarn for the people of Najd and have been told that appointed Yalamlam for the people of Yemen
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (1525) Sahih Muslim (1182)
In-book reference: 11:17