law: Constitution of India, 1949 
  3. Formation of new States and alteration of
  
  areas, boundaries or names of existing States: - 
  Parliament may by law.
  (a) form a new State by separation of
  
  territory from any State or by uniting two or more States or parts of States or
  
  by uniting any territory to a part of any State;
  (b) increase the area of any State;
  (c) diminish the area of any State;
  (d) alter the boundaries of any State;
  (e) alter the name of any State;
  Provided  that no Bill for the purpose shall be
  
  introduced in either House of Parliament except on the recommendation of the President
  
  and unless, where the proposal contained in the Bill affects the area,
  
  boundaries or name of any of the States, the Bill has been referred by the
  
  President to the Legislature of that State for expressing its views thereon
  
  within such period as may be specified in the reference or within such further
  
  period as the President may allow and the period so specified or allowed has
  
  expired.
  Explanation I - In this article, in
  
  clauses (a) to (e), "State" includes a Union territory, but in the
  
  proviso, "State" does not include a Union territory.
  Explanation II - The power conferred
  
  on Parliament by clause (a) includes the power to form a new State or Union
  
  territory by uniting a part of any State or Union territory to any other State
  
  or Union territory.