law: Transfer of Property Act, 1882
  16. Transfer to take effect on failure of prior interest
  Where, by reason of any of the rules contained in sections 13
  
  and 14, an interest created for the benefit of a person or of a class of
  
  persons fails in regard to such person or the whole of such class, any interest
  
  created in the same transaction and intended to take effect after or upon
  
  failure of such prior interest also fails.