law: Indian Trusts Act, 1882 
  90. Advantage gained by qualified owner 
  Where a tenant for life, co-owner, mortgagee or other qualified
  
  owner of any property by availing himself of his position as such, gains an
  
  advantage in derogation of the rights of the other persons interested in the
  
  property, or where any such owner, as representing all persons interested in
  
  such property, gains any advantage, he must hold, for the benefit of all
  
  persons so interested, the advantage so gained, but subject to repayment by
  
  such persons of their due share of the expenses properly incurred, and to an
  
  indemnity by the same persons against liabilities properly contracted, in gaining
  
  such advantage.
  Illustrations 
  (a) A, the tenant for life of leasehold property, renews the
  
  lease in his own name and for his own benefit. A holds the renewed lease for
  
  the benefit of all those interested in the old lease.
  (b) A village belongs to a Hindu family. A, one of its members,
  
  pays nazrana to government and thereby procures his name to be entered as the
  
  inamdar of the village. A holds the village for the benefit of himself and the
  
  other members.
  (c) A mortgages land to B, who enters into possession. B allows
  
  the government revenue to fall into arrear with a view to the land being put up
  
  for sale and his becoming himself the purchaser of it. The land is accordingly
  
  sold to B. Subject to the repayment of the amount due on the mortgage and of
  
  his expenses properly incurred as mortgagee, B holds the land for the benefit
  
  of A.