Is it permissible for a son to perform 'Umrah on behalf of his sick mother who cannot walk and is in a distant country?

Question:
My mother is sick, and she lives in a distant country. She tells me to perform 'Umrah on her behalf because she is sick and cannot walk. Is it permissible for me to perform 'Umrah on her behalf?

Answer:
If she has already performed 'Umrah before, then no, you do not perform 'Umrah on her behalf, because one does not perform 'Umrah on behalf of a living person, nor Hajj on behalf of a living person, except if he is unable to perform the obligatory Hajj. In that case, he performs the obligatory Hajj and the obligatory 'Umrah on his behalf if his inability is continuous and it is not expected to end, and he is unable to perform Hajj himself. It is permissible to act as a substitute for him in this case. As for if she has performed Hajj and 'Umrah, praise be to Allah, that is sufficient. You should make du'a for her and seek forgiveness for her, and she should increase in acts of obedience in her place, and praise be to Allah. Yes.