Probate court does not decide title or existence of the property itself

Ishwardeo Narain Singh v. Smt Kamta Devi AIR 1954 SC 280 

A court of probate is only concerned with the question as to whether the document put forward as the last will and testament of a deceased person was duly executed and attested in accordance with law and whether at the time of such execution the testator had sound disposing mind. The question whether a particular bequest is good or bad is not within the purview of the probate court. Therefore the only issue in a probate proceedings relates to the genuineness and due execution of the will and the court itself is under duty to determine it and preserve the original will in its custody. The Succession Act is a self-contained code insofar as the question of making an application for probate, grant or refusal of probate or an appeal carried against the decision of the probate court. This is clearly manifested in the fascicule of the provisions of the Act. The probate proceedings shall be conducted by the probate court in the manner prescribed in the Act and in no other ways. The grant of probate with a copy of the will annexed establishes conclusively as to the appointment of the executor and the valid execution of the will. Thus it does no more than establish the factum of the will and the legal character of the executor. Probate court does not decide any question of title or of the existence of the property itself.