law: Code of Criminal Procedure Act, 1973
  200.Examination of complainant.-
  A Magistrate taking cognizance of an offence
  
  on complaint shall examine upon oath the complainant and the witnesses present,
  
  if any, and the substance of such examination shall be reduced to writing and
  
  shall be signed by the complainant and the witnesses, and also by the
  
  Magistrate:
  
  Provided that, when the complaint is made in writing, the Magistrate
  
  need not examine the complainant and the witnesses-
  (a) if a public servant acting or purporting
  
  to act in the discharge of his official duties or a Court has made the
  
  complainant; or
  (b) if the Magistrate makes over the case for
  
  inquiry or trial to another Magistrate under section 192:
  Provided further that if the Magistrate
  
  makes over the case to another Magistrate under section 192 after examining the
  
  complainant and the witnesses, the latter Magistrate need not re-examine them.