Pagadi chawl system (sra development)

Issue legal notice through a local prudent lawyer to vacat the premises by tenant on the above grounds followed by eviction proceeding.

No, tenant can't sublet premises without written permission of landlord .Issue notice and demand vacant possession of premises and if notice is not complied with then file eviction suit against him on ground of default in making payments of rent a d subletting. 

Thanks for the reply, secondly if slum is declared so is there any rule that tenant can deny paying rent ?

A tenant is liable to pay rent to the owner of a building in a slum area, unless the building is owned by the government, a local authority, or the Delhi Development Authority. The tenant must pay the rent as determined by the general law that controls rent in the area, or as specified in the Slum Areas (Improvement and Clearance) Act, 1956. 

The Slum Areas (Improvement and Clearance) Act, 1956 also states that a competent authority can't evict a tenant from a slum area without written permission. The Karnataka Slum Areas (Development) Act, 1973 also protects tenants in slum areas from eviction

Any suggestion depend upon the rent law as well the extant policy of slum developemt as in force in your State. Anyhow, the tenant ought to continue to pay the rent, however nominal it may be.