Section 421(1) in The Delhi Municipal Corporation Act, 1957
(1)No person shall, without or otherwise than in conformity with the terms of a licence granted by the Commissioner in this behalf, keep any eating house, lodging house, hotel, boarding house, tea shop, coffee house, cafe, restaurant, refreshment room or any place where the public are admitted for repose or for the consumption of any food or drink or any place where food is sold or prepared for sale.