law: Indian Trusts Act, 1882 
  61. Right to compel to any act of duty 
  The beneficiary has a right that his trustee shall be compelled
  
  to perform any particular act of his duty as such, and restrained from
  
  committing any contemplated or probable breach of trust.
  Illustrations 
  (a) A contracts with B to pay him monthly Rs. 100 for the
  
  benefit of C. B writes and signs a letter declaring that he will hold in trust
  
  for C the money so to be paid. A fails to pay the money in accordance with his
  
  contract. C may compel B on a proper indemnity to allow C to sue on the
  
  contract in B's name.
  (b) A is trustee of certain land, with a power to sell the same
  
  and pay the proceeds to B and C equally. A is about to make an improvident sale
  
  of the land. B may sue on behalf of himself and C for an injunction to restrain
  
  A from making the sale.