Cancel of blood relation deed after mutation

Hello Sir, My grandfather had 3 killa's agriculture land in haryana from his personal own property. One year ago he decided to transfer this property between all 5 grandchildren on equally and hi did the same one year ago. After the one year when we were out of town due to marriage in relatives suddenly my Bua came and take my grandfather on her home and did the brain washed to ask to us to take back this property back since she also wants the share of property. We always take care of my grandfather and ask again now to come back home but my bua and grandfather refused without any reason and only demanding to take back property. Now they also filled the case in sr citizen tribunal act 2007. We have all the proof of medical supply and hospitals as a atte dant. My Bua and Fufa ji are too greediness and my grandfather is 85 year old. Dear sir now i would like to confirm whether the my grandfather take this property back after the intkal (mutation) or not via case. Requesting you to please also share your contact number for further guidance and suggestion. Thank you in advance..!