Praise be to Allaah.
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.