Payments made by social security to daughters and wives is their exclusive property and the other heirs do not have any share in it
Question

                Our father has died (may Allaah have mercy on him) and his pension came from social security. Please note that when a person dies, they deduct half of his pension and the other half is left for those who he used to take care of, such as wives, sons under the age of 25 and daughters who are unmarried or not working, and that half is shared among them. 

My question is: do the heirs who are sons over the age of 25 and married daughters have the right to take anything from this pension?.
Praise be to Allah.
    What is paid by social insurance or social security to the 
    daughters and the wife is their exclusive property, and the other heirs do 
    not have the right to take anything from this money, because it is not part 
    of the estate; rather it is conditional help given by the state, to those 
    who fulfil the conditions of entitlement to this help. The one who is not 
    entitled to this money -- based on the conditions of entitlement -- is not 
    permitted to take any of this money. 

    With regard to what the father received during his lifetime, 
    whatever is left of it following his death is to be shared out with the rest 
    of his estate to all the heirs. 

    And Allaah knows best.