Section 389(6) in Goa Succession, Special Notaries and Inventory Proceeding Act, 2012
(6)Where the disability arises from insanity, the insanity shall be proved by a certificate issued by the Director of any Institute of Psychiatry and Human Behaviour, where the party is an internee of such an Institute. In other cases, the insanity shall be proved by certificate issued by two Psychiatrists or by referring the concerned party to the nearest Institute of Psychiatry and Human Behaviour.