Ancestral property taken by father and compensation given to sisters.

My father has two sisters. My father's father is expired and mother is still alive. We have one ancestral property and my father wanted this. As part of this settlement, my father gave compensation amount to each sister. But we didn't have any written settlement document with us. Now my ask is, what kind of paper work/document to be made to revoke their rights on ancestral property as my father already gave the settlement amount. Please advise.