Can I file lawsuit of 144

Sir, my grand father has a land of 19 kattha (Bihar) , 1/3 part of the land is captured by Muslim dominated people. Later my grandfather written to his mother not sure by court or not.Later the two brothers of my grandfather jumped in to have there parttion in the land. The son of one of the first grandfather sold one part of land saying he solded his father part of land. Now he came again and after mutual consent with the son of seconds grandfather he going to sold the 2 part of land , and rest part of the which is captured by Muslim dominated people will left with us of no use.. FYI we are regularly updating the land rasid which include all the part of land and on this rasid my grandfather name is written. I wonder how some one solding his land part without legal court papers and without our concert. And how my uncle decided that front part of land belongs to him and second belongs to another and rest which is captured is belongs to us. Can I file a lawsuit to justify this and how to get rid of land which is captured.