It must be made clear that Hajj Qiran cannot leave the state of Ihram until his Hajj and Umrah is done, even if there is a long period between Umrah and Hajj, the state of Ihram cannot be exited.However, a Qarin is liable to perform his Umrah in the months of Shawwal, Dhul-Qa'dah or during the first 8 days of Dhul-Hijjah. On reaching Makkah, Qarin is obliged to first perform a Tawaf and then a sai’.
Hajj Ifrad is normally performed by those who live within Miqat i.e. However, if he does perform Umrah during the Islamic months Shawwal, Dhul-Qa'dah and Dhul-Hijjah, he is no longer performing Hajj Ifrad.
This means that if an Umrah is performed before performing Hajj rituals (that begin from 8th of Dhul Hijjah), one does NOT remain a Mufrid.
So it is clear that whenever Hajj is performed without Umrah, it is Hajj Ifrad.
A Mufrid cannot exit the state of Ihram until he stones the Shaitan (devil).
Hajj Tamattu: The one who performs the Hajj Tamattu (which is known as the enjoyable Hajj) is called a Mutamatti. However, a Mutamatti enters Ihram for Umrah and leaves the state of Ihram, he can then enter a new Ihram for Hajj.
While he is not in a state of Ihram (the period when he has done Umrah and has to perform Hajj) he is allowed to do what is forbidden while he is in the state of Ihram.
Normally people coming to Saudi Arabia from all around the world perform Hajj Tamattu.
They perform an Umrah, leave the situation of Ihram and enter into Ihram again before Hajj.
These 3 types of Hajj are named as Hajj Ifrad, Hajj Qiran, and Tamattu.
These Hajj(s) are different from one another in responsibilities and thereby Muslims shall know that what type of Hajj shall they perform and how shall they perform it.
However, Allah Almighty has briefed in Quran that if a person cannot offer a sacrifice, he shall fast for 10 days. The remaining 7 fast can be kept by him after he returns to his home.