Answer
When a person enters into the boundaries of Meeqaat, he has to be in the state of Ihraam. Therefore, he has to come out of the Ihraam by at least performing Umrah.
If he had performed Umrah and has the means to perform Hajj, then Hajj is also compulsory. He can come out of the Meeqaat after performing Umrah and return for Hajj.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai