law: Constitution of India, 1949 
     18. Abolition of titles.- 
  No title, not being a military or academic
  
  distinction, shall be conferred by the State.
  No citizen of India shall accept any title
  
  from any foreign State.
  No person who is not a citizen of India shall,
  
  while he holds any office of profit or trust under the State, accept without
  
  the consent of the President any title from any foreign State.
  No person holding any office of profit or
  
  trust under the State shall, without the consent of the President, accept any
  
  present, emolument, or office of any kind from or under any foreign State