I am sure my father didn't sign any documents without informing us. He is not alive. My father's brothers partitioned a house in their names, without giving my father's share to me. They are telling me that my father signed a bond that neither my father nor my mother nor I won't claim any share in the house in the future. Also, they are telling me that the bond is registered but they never showed me the bond. I have a doubt. The property is not my grandfather's own earned property. It is their ancestral property. Even if my father denied the share in the property, can I claim the same in court?