law: Securities Contracts (Regulation) Act, 1956
  18.Exclusion of spot
  
  delivery contracts from sections 13,14, 15 and 17.-
  (1) Nothing contained
  
  in sections 13, 14,15 and 17 shall apply to spot delivery contracts.
  (2) Notwithstanding
  
  anything contained in sub-section (1), if the Central Government is of opinion
  
  that in the interest of the trade or in the public interest it is expedient to
  
  regulate and control the business of delaying in spot delivery contracts also
  
  in any State or area (whether section 13 has been declared to apply to the
  
  State or area or not), it may, by notification in the Official Gazette, declare
  
  that the provisions of section 17 shall also apply to such State or area in
  
  respect of spot delivery contracts generally or in respect of spot delivery
  
  contracts for the sale or purchase of such securities as may be specified in
  
  the notification, and may also specify the manner in which, and the extent to
  
  which, the provisions of that section shall so apply.