(1) The tenant on whom the summons is served in the form specified in the Second Schedule shall not contest the prayer for eviction from the accommodation unless he files within fifteen days from the date of service of the summons, an application supported by an affidavit stating the grounds on which he seeks to contest the application for eviction and obtains leave from the Rent Controlling Authority as hereinafter provided, and in default of his appearance in pursuance of the summons or in default of his obtaining such leave, or if such leave is refused, the statement made by the landlord in the application for eviction shall be deemed to be admitted by the tenant. The Rent Controlling Authority shall in such a case pass an order of eviction of the tenant from the accommodation:
Provided that the Rent Controlling Authority may, for sufficient cause shown by the tenant, excuse the delay of the tenant in entering appearance or in applying for leave to defend the application for eviction and where ex-parte order has been passed, may set it aside.
(2) The Rent Controlling Authority shall, within one month of the date of receipt of application, give to the tenant, if necessary, leave to contest the application, if the application supported by an affidavit filed by the tenant discloses such facts as would disentitle the landlord from obtaining an order for the recovery of possession of the accommodation on the ground specified in Section 23-A.