Grandparents property father want to sale against my will

We are having agriculture land dispute with my Grandparents. In the year 2007 we filed a case against my grandparents for not selling the agriculture property. Court taken a decision that " As the property came to my grandfather from his father, he does not have legal right to sale the property against the will of his adult children. And also issued an order that 'he will be alone using the property till his life and he cannot sale it to someone, can't mortgage it and can't take any loan on the same. In the year 2015 my grandfather sold some part of agriculture land. That is a contempt of court order. We filed a case against him for selling the property by contempt court order. In last month the court find him guilty for doing this. But court neither given a Set Aside order for registry of sold land nor sent him to prison by saying that he is old age. Please guide what can we do ? Where shall we go for Justice. Total Land Property is ( 4 Acre 2 Kanal) out of this he has been sold (1 Acre)