The Prophet ﷺ fixed Dhul-Hulaifa as the Miqat (the place for assuming Ihram) for the people of Medina, and Qaran-al-Manazil for the people of Najd, and Yalamlam for the people of Yemen. These Mawaqit are for those people and also for those who come through these Mawaqit (from places other than the above-mentioned) with the intention of (performing) Hajj and Umra. And those living inside these Mawaqit can assume Ihram from the place where they start; even the people of Mecca can assume Ihram from Mecca.  

أَنَّ النَّبِيَّ ﷺ وَقَّتَ لأَهْلِ الْمَدِينَةِ ذَا الْحُلَيْفَةِ وَلأَهْلِ نَجْدٍ قَرْنَ الْمَنَازِلِ وَلأَهْلِ الْيَمَنِ يَلَمْلَمَ هُنَّ لَهُنَّ وَلِكُلِّ آتٍ أَتَى عَلَيْهِنَّ مِنْ غَيْرِهِمْ مِمَّنْ أَرَادَ الْحَجَّ وَالْعُمْرَةَ فَمَنْ كَانَ دُونَ ذَلِكَ فَمِنْ حَيْثُ أَنْشَأَ حَتَّى أَهْلُ مَكَّةَ مِنْ مَكَّةَ  

Messenger of Allah ﷺ entered Mecca in the year of its Conquest wearing an Arabian helmet on his head and when the Prophet ﷺ took it off, a person came and said, "Ibn Khatal is holding the covering of the Kaʿba (taking refuge in the Kaʿba)." The Prophet ﷺ said, "Kill him."  

أَنَّ رَسُولَ اللَّهِ ﷺ دَخَلَ عَامَ الْفَتْحِ وَعَلَى رَأْسِهِ الْمِغْفَرُ فَلَمَّا نَزَعَهُ جَاءَ رَجُلٌ فَقَالَ إِنَّ ابْنَ خَطَلٍ مُتَعَلِّقٌ بِأَسْتَارِ الْكَعْبَةِ فَقَالَ اقْتُلُوهُ