Yahya related to me from Malik from Abdullah ibn Dinar thatAbdullah ibn Umar said, "The Messenger of Allah, may Allah bless himand grant him peace, told the people of Madina to enter ihram atDhu'l-Hulayfa, the people of Syria to do so at al-Juhfa, and thepeople of Najd to do so at Qarn.'Abdullah ibn Umar said, "I heard these three from the Messengerof Allah, may Allah bless him and grant him peace. I was also toldthat the Messenger of Allah, may Allah bless him and grant him peace,said, 'The people of Yemen should enter ihram at Yalamlam.' "
USC-MSA web (English) reference: Book 20, Hadith 23
Arabic reference: Book 20, Hadith 732