Muwatta Malik, Book 20, Hadith 22 (USC-MSA)

Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah, may Allah bless him and grant him peace, said, "The people of Madina should enter ihram at Dhu'l-Hulayfa, the people of Syria should do so at al-Juhfa, and the people of Najd should do so at Qarn." Abdullah ibn Umar added, "I have heard that the Messenger of Allah, may Allah bless him and grant him peace, said, 'The people of Yemen should enter ihram at Yalamlam.' "

وَحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ يُهِلُّ أَهْلُ الْمَدِينَةِ مِنْ ذِي الْحُلَيْفَةِ وَيُهِلُّ أَهْلُ الشَّامِ مِنَ الْجُحْفَةِ وَيُهِلُّ أَهْلُ نَجْدٍ مِنْ قَرْنٍ ‏"‏ ‏.‏ قَالَ عَبْدُ اللَّهِ بْنُ عُمَرَ وَبَلَغَنِي أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ وَيُهِلُّ أَهْلُ الْيَمَنِ مِنْ يَلَمْلَمَ ‏"‏ ‏.‏

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also referenced under: Book 20, Hadith 731 (In-Book)