Section 21(1) in The West Bengal Premises Tenancy Act, 1956.
(1)Where the landlord does not accept any rent tendered by the tenant within the time referred to in section 4 or where there is a bona fide doubt as to the person or persons to whom the rent is payable, the tenant may deposit such rent with the Controller in the prescribed manner:[Provided that where any rent is remitted by the tenant to the landlord by postal money order, the date of issue of the postal money order shall, for the purposes of this sub-section, be deemed to be the date of tender of such rent by the tenant to the landlord.] [Proviso inserted by W.B. Act 34 of 1969.]