Hajj is one of the five pillars or central duties of Islam.
It is a set of acts of worship to be performed in and around Mecca (Makkah) at least once in a lifetime by every Muslim satisfying certain conditions.
The Hajj pilgrim coming from a place distant from Mecca, assumes the ihram from the miqat on their way, or from a point parallel to the closest miqat, and starts reciting the talbiyah. In this there is no difference between one performing `Umrah mufradah or any of the three types of Hajj (i.e.tamattu, ifrad, qiran). However, those who live within the haram of Mecca assume ihram from their houses.’
لْحَجُّأَشْهُرٌ مَّعْلُومَاتٌ فَمَن فَرَضَ فِيهِنَّ الْحَجَّ فَلاَ رَفَثَ
وَلاَ فُسُوقَ وَلاَ جِدَالَ فِي الْحَجِّ وَمَا تَفْعَلُواْ مِنْ خَيْرٍ
يَعْلَمْهُ اللّهُ وَتَزَوَّدُواْ فَإِنَّ خَيْرَ الزَّادِ التَّقْوَى
وَاتَّقُونِ يَا أُوْلِي الأَلْبَابِ
“For Hajj are the months well known.If any one undertakes that duty therein, Let there be no obscenity, nor wickedness, nor wrangling in the Hajj. And whatever good ye do, (be sure) God knoweth it. And take a provision (With you) for the journey, but the best of provisions is right conduct. So fear Me, o ye that are wise.” (Al-Baqarah 2:197)