question #1 Sahih Muslim 1182c, Book 15, Hadith 17 : What are the designated locations for entering the state of Ihram for pilgrims coming from different regions?

I heard the Messenger of Allah (ﷺ) as saying that the people of Medina should enter upon the state of Ihram at Dhu’l- Hulaifa, the people of Syria at Mahya’a and that is Juhfa, and the people of Najd at Qarn (al-Manazil). ‘Abdullah b. ‘Umar (Allah be pleased with them) said: (I did not hear it myself from him) but heard from them saying that the Messenger of Allah (ﷺ) had (also) said: The people of Yemen should enter upon the state of Ihram at Yalamlam.