Section 18H(1) in The Goa, Daman and Diu Agricultural Tenancy Act, 1964
(1)On the deposit of the purchase price in lumpsum or of the first installment of such price, the Mamlatdar shall issue a certificate of purchase in the prescribed form to the tenant purchaser in respect of the land and such certificate shall, subject to sub-section (2), be conclusive evidence of the purchase.