(1)  Where, after the commencement of this Act, any premises are sub-let either in whole or in part by the tenant with the previous consent in writing of the landlord, the tenant or the sub-tenant to whom the premises are sub-let may, in the prescribed manner, give notice to the landlord of the creation of the sub-tenancy within one month of the date of such sub-letting and notify the termination of such sub-tenancy within one month of such termination.

   (2)  Where, before the commencement of this Act, any premises have been lawfully sub-let either in whole or in part by the tenant, the tenant or the sub-tenant to whom the premises have been sub-let may, in the prescribed manner, give notice to the landlord of the creation of the sub-tenancy within six months of the commencement of this Act, and notify the termination of such sub-tenancy within one month of such termination.

   (3)  Where in any case mentioned in sub-section (2), the landlord contests that the premises were not lawfully sub-let, and an application is made to the Controller in this behalf, either by the landlord or by the sub-tenant, within two months of the date of the receipt of the notice of sub-letting by the landlord or the issue of the notice by the tenant or the sub-tenant, as the case may be, the Controller shall decide the dispute.