Is it necessary for someone who is financially able but is sick and cannot go to Hajj himself to appoint a representative?

Answer:

If he is financially able while healthy and has not gone to Hajj, it is necessary for him to appoint a representative on his behalf. However, if he is financially able while in a state of illness that has made him unable to go to Hajj and continues to this day, it is a matter of precaution, and indeed, it is more obvious, for him to appoint a representative to perform Hajj on his behalf.