Question
If a person all his life never had enough money to go for Hajj but when he was old and sick he had enough money that made Hajj Fard. Is it Wajib for him to send someone to perform it for him while he is alive.

Answer
In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
In principle, all of the necessary requirements for Hajj have to be met at the same time in order for Hajj to become obligatory. Therefore, if one does not have sufficient financial means, Hajj is not obligatory even though he is healthy. In a similar manner, if one has sufficient means for Hajj, but is so sick that he is not capable of performing Hajj, Hajj is neither mandatory nor does he have to send someone to perform on his behalf. This is of course for the one who attained sufficient means after he became sick. However if he attained enough wealth before the sickness, then after the sickness it is mandatory to send someone to perform Hajj on his behalf.
And Allah Ta’āla Knows Best
Mawlana Abdul Azeem bin Abdur Rahman,
Student Darul Iftaa
US
Checked and Approved by,
Mufti Ebrahim Desai.
www.daruliftaa.com