Requirement of Hajj in Quran

The Hajj (pilgrimage) is in the well-known months. So whoever intends to perform Hajj therein, then he should not have sexual relations, nor commit sin, nor dispute unjustly during the Hajj. And whatever good you do, Allah knows it. And take a provision for the journey; but the best provision is piety, righteousness. So fear Me, o men of understanding!

Requirements of Hajj
1. Ihram: Forbidding certain behaviors which are permissible normally, and to invoke talbiyah.
2. Tawaf: Walking around the Kaaba seven times and then praying two rakaats.
3. Sa'y: Traveling back and forth seven times between Safa and Marwah.
4. Arafat: Spending the afternoon of the Arafat day on the plain of the Mount Arafat until after sunset.
5. Muzdalifah: Spending the night just before the Eid in the valley of Muzdalifah until sunrise.
6. Stoning: Throwing pebbles at three walls called jamarat in the valley of Mina on the days of Eid.
7. Sacrificing: Sacrificing an animal in Mina, small or big, on the days of Eid (only for those who combine hajj and umrah).
8. Shaving: Having his head shaved.

Four of these requirements are already joint with umrah. Sacrificing an animal is conditional, too. So then, there are only three requirements special to hajj: Spending the day of Arafat in Arafat, spending the night of Eid in Muzdalifah, and Mina on the days of Eid.

Hajj is so simple and so plain.