Whoever performs Hajj as a Mutamatti' and after 'Umrah the Doctor advises him not to continue with Hajj, so he returns to his land
Question :
I went to perform Hajj as a Mutamatti", and after I performed the 'Umrah for Hajj, I went to Mina on the 3rd of Thul-Hijjah. After I removed my Ihram from 'Umrah, I felt some pain in my knee that caused me not to be able to walk. I went to the doctor and he advised me not to continue with the Hajj. So, I returned to Al-Madinah where I live and I did not perform Hajj, even though when I intended the Umrah I did not say: "If something prevents me, my place of removing Ihram is wherever You (Allâh) stop me." What I would like from you is to know whether or not I have to sacrifice an animal?
Answer:
If the situation is as mentioned, that you removed your Ihram from your 'Umrah and you gave up performing the Hajj, then you returned to your land before assuming Ihram for it (Hajj), nothing is due on you. This is because the 'Umrah was finished by its performance and removing Ihram from it, and you never assumed Ihram for the Hajj.
Source:
The Permanent Committee
Fatawa Islamiyah, Vol. 4 Pages 101