He has some money but if he buys a car with it he will not be able to do Hajj
Question

                I have become able to afford Hajj, but I want to buy a car. Is it permissible to buy it, knowing that this will cause me to delay Hajj?.
Praise be to Allah.
    If you need the car, there is nothing wrong with buying it 
    even if that causes you to delay doing Hajj, because one of the conditions 
    of Hajj being obligatory is that one can afford it, which refers to having 
    wealth surplus to ones basic needs. One of these needs is a car to travel 
    in, the price of which is within his means, without going to extremes and 
    buying something extravagant in imitation of others or to show off. For the 
    conditions of Hajj being obligatory, please see the answer to question no
    41957. 

    But if you do not need the car, then you should give Hajj 
    precedence over buying a car. 

    We ask Allaah to bless you abundantly and grant you a good 
    and blessed provision.  

    And Allaah knows best.