will made of unsound mind

The dauhters should collect all the medical certificates pertaining to their grand father and they should first prove that he is not in position to execute a will.  They must collect all these materials before launching any legal proceedings

Does hospitalisation and aged a ground to hold that the grandfather was unsound at the time of making the will? I dont think so, as even Explaination 2 and 3 of section 59 of the Indian Succession Act of 1925 claerly lays down who can make a will. Unless there is clear indications that the grandfather was suffering from unsoundness of mind and that he does not know what he was doing at the time of exececutio of the will, it will not be proper to question the will. Moreover the right person to clarified the circumstances under which the will was executed is your uncle's son who is the witness to the will.

dont create story but fight on actual facts than u definitely will win . just narrate facts to u r advocate who will guide u in possible defence available to u

during the age of 85 years in hospitalization before and after the excution of the will is sufficient to cast darkness/clouds over the alleged will. Hospital record shall can even clearly show that the scriber of the will was not in a fit position to make free mind will. Even witness seems interested so it is better by daughters to file a suit for partition of the property and in defence their brothers shall bring the will which can be chellenged in replication.

Dear Uncanno09, are you alleging your grand father as insane or are you alleging the will as forged: make up your mind and take steps. But look before you leap.