No person, by reason of interest in, or of his being an executor of, a will, shall be disqualified as a witness to prove the execution of the will or to prove the validity or invalidity thereof.
PART VI TESTAMENTARY SUCCESSION · CHAPTER V.—Of the Attestation, Revocation, Alteration and Revival of Wills
Section 68: Witness not disqualified by interest or by being executor
The Indian Succession Act, 1925