law: Specific Relief Act, 1963
  38. Perpetual injunction when granted
  (1) Subject to the other provisions contained in or referred to
  
  by this Chapter, a perpetual injunction may be granted to the plaintiff to prevent
  
  the breach of an obligation existing in his favor, whether expressly or by
  
  implication.
  (2) When any such obligation arises from contract, the court
  
  shall be guided by the rules and provisions contained in Chapter II.
  (3) When the defendant invades or threatens to invade the
  
  plaintiff's right to, or enjoyment of, property, the court may grant a
  
  perpetual injunction in the following cases, namely,-
  (a) where the defendant is trustee of the
  
  property for the plaintiff;
  (b) where there exists no standard for
  
  ascertaining the actual damage caused, or likely to be caused, by the invasion;
  
  
  (c) where the invasion is such that
  
  compensation in money would not afford adequate relief;
  (d) where the injunction is necessary to
  
  prevent a multiplicity of judicial proceedings..