Any Right On My/father Property Of MY DIVORCED WIFE SON As He Become Adult.

I am getting different answers by experts on my question. So I am ambiguous, please clarify me Hello, I am taking divorce from my wife with our mutual agreement and by creating FD backup amount to my 3 year son who will get it as he become adult. My son will stay with my divorced wife. Earlier my wife did FIR on me and my parents by fake dowry amount and harassment sections. By police investigation and multiple calling, now she also fed up and decided to recall FIR by mutual settlement, by not going to court. It seems police investigation in on our side. I heard few cases where grandson claim for father or grand father property as he become adult despite of his mother is divorced. One of the case is of Rohit shekhar and N. D. Tiwari case. What should I do to prevent claim of my son on my father/or my self earned property, as he become adult. .. Property is not ancestral. Please suggest me.