law: Narcotic Drugs and Psychotropic Substances Act, 1985
  35. Presumption of culpable mental
  
  state.
  (1) In any prosecution for an offence under this Act which requires
  
  a culpable mental state of the accused, the court shall presume the existence
  
  of such mental state but it shall be a defense for the accused to prove the
  
  fact that he had no such mental state with respect to the act charged as an
  
  offence in that prosecution.
  Explanation.- In this section "culpable mental
  
  state" includes intention, motive, knowledge of a fact and belief in, or
  
  reason to believe, a fact.
  (2) For the purpose of this section, a fact is said to be proved
  
  only when the court believes it to exist beyond a reasonable doubt and not
  
  merely when its existence is established by a preponderance of probability.