There are three types of Ihram (ritual state for Hajj or ‘Umrah).
assuming Ihram just for performing Hajj. It is not obligatory for the pilgrim performing Ifrad Hajj to offer Hady (sacrificial animal offered by pilgrims).
assuming Ihram for Hajj and ‘Umrah together. This type of Hajj is called Qiran Hajj (combining Hajj and `Umrah without a break in between) and also Tamattu‘ Hajj (`Umrah during the months of Hajj followed by Hajj in the same year with a break in between). It is obligatory to offer a Hady in Qiran Hajj.
assuming Ihram to perform ‘Umrah during the months of Hajj. In this case, Ihram is assumed for ‘Umrah and then ended, and Hajj is performed in the same year. This type of Hajj is called Tamattu‘ Hajj and it is obligatory to offer a Hady in this type. Anyone who cannot afford a Hady should observe Sawm (Fast) for three days during Hajj, and seven days when they return to their homeland or place of residence.
The best of the three types is:
Tamattu‘ Hajj, performing ‘Umrah (during the months of Hajj) followed by Hajj (in the same year).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.