Existence of ALLAH is a belief. But based on that belief a MUSLIM should NOT and CANNOT claim rights on a property. He/she should own that property LEGALLY.
You may dis-agree with the existence of ALLAH. That is ur faith.
But Muslims are not claiming any Land/Property/Right based on their belief in ALLAH.
See the difference.
Sonia gandhi is not claiming anyone elses property based on her Belief !!!