A father who has not performed Hajj due to lack of money: Do his children perform Hajj on his behalf?

Question:
My father is an employee, and the situation, praise be to Allah, does not allow him to perform the obligatory duty, specifically regarding financial means. Is it permissible for me to perform the obligatory duty on his behalf?

Answer:
If he does not have the money to enable him to perform Hajj, then Hajj is not obligatory upon him. Allah, Glorified and Exalted is He, said: So if he is unable to perform Hajj financially, then Hajj is not required of him, and it does not become obligatory upon him such that someone performs it on his behalf. However, if he is able and has money, then it is not permissible for you to perform Hajj on his behalf for the obligatory Hajj. Rather, it is obligatory for him to perform Hajj himself and carry out the Hajj personally, except if he has lost hope of being able to perform Hajj physically, such as if he is suffering from a chronic illness that prevents him from performing Hajj, or if he is an old man who is too frail to perform Hajj himself. In that case, there is no harm in performing it on his behalf, as in the case of the man who came to the Prophet (peace and blessings be upon him) and informed him that his father had reached the age of obligatory Hajj, but he was unable to stay on the mount. He asked: Should I perform Hajj on his behalf?
He said (peace and blessings be upon him): Perform Hajj on behalf of your father. If a person is financially able to perform Hajj, but is physically unable, and this inability is continuous and not expected to end, then someone performs Hajj on his behalf. However, if the removal of this obstacle is expected, then he waits until it is removed and performs Hajj himself. Yes.