You have no share by birth in the proeprty of your grand mother. So your father has done nothing wrong i selling the proeprty of your grand mother.
So nothing can be done anymore with respect of the said property.
Makan meri dadi ji ke naam tha , dadi ji ki death ho gayi par unhone death hone se pehle koi vasiyat nahi ki thi. Pita ji ne bina bachoo ki sahmati ke ancestral property registered agreement karte huye bech di hai. Sir, mujhe ye bata dijiye ki kya ise roka ja sakta hai aur agar haan tau kis tarah.
You have no share by birth in the proeprty of your grand mother. So your father has done nothing wrong i selling the proeprty of your grand mother.
So nothing can be done anymore with respect of the said property.
Agar makaan dadi ke naam hai to unki death ke baad unkey surviving legal heirs i.e unkey bachey ko jaata hai. So aapke pitaji apna hisa bechney ke liye swatantra hain. Aap isey nahin rok saktey.
1) kindly cl;clarify on what basis you say it is ancestral property.
2) if property has remained undivided for four generations it is ancestral property
3) in such a case you would have share in property as grand son
agar Dadi ji ki apni property thi to unke bachche hi haqdar hai lekin agar property ancestral thi to sabhi ko haque milega uske liye court me civil suit injunction ke liye dalna padega aur stay lena pdega.
ancestral property(4 pusto se chali aa rahi honi chahiye)
The property that belonged to your grandmother cannot be termed as ancestral property.
The property on the name of yor grandfather also is not ancestral property in yor hand and you have no rights in it.
Your father as a legal heir had full rights in the property and he can sell i in any manner of his choice and he need not take consent or permission from his children to sell the property which is lying on his name now.
You can look for some other way to claim a share in the the property if there are chances for that.