Which Act lays down provisions related to KYC norms?

Section 11A. Verification of Identity by Reporting Entity—(1) Every Reporting Entity shall verify the identity of its clients and the beneficial owner, by— (a) authentication under the Aadhaar (Targeted Delivery of Financial and Other Subsidies, Benefits and Services) Act, 2016 (18 of 2016) if the reporting entity is a banking company; or (b) offline verification under the Aadhaar (Targeted Delivery of Financial and Other Subsidies, Benefits and Services) Act, 2016 (18 of 2016); or (c) use of passport issued under section 4 of the PassportsAct, 1967 (15 of 1967); or (d) use of any other officially valid document or modes of identification as may be notified by the Central Government in this behalf.