Section 19(1) in The Slum Areas (Improvement And Clearance) Act, 1956
(1)Notwithstanding anything contained in any other law for the time being in force, no person shall, except with the previous permission in writing of the competent authority,—(a)institute, after the commencement of the Slum Areas (Improvement and Clearance), Amendment Act, 1964 (43 of 1964) any suit or proceeding for obtaining any decree or order for the eviction of a tenant from any building or land in a slum area; or(b)where any decree or order is obtained in any suit or proceeding instituted before such commencement for the eviction of a tenant from any building or land in such area, execute such decree or order.