law: Hindu Succession Act, 1956
  5. Act not to apply to certain properties
  This Act shall not apply to-
  (i) any property succession to which is regulated by the Indian
  
  Succession Act, 1925, by reason of the provisions contained in section 21 of
  
  the Special Marriage Act, 1954;
  (ii) any estate which descends to a single heir by the terms of
  
  any covenant or agreement entered into by the Ruler of any Indian State with
  
  the Government of India or by the terms of any enactment passed before the
  
  commencement of this Act;
  (iii) the Valiamma Thampuran Kovilagam Estate and the Palace
  
  Fund administered by the Palace Administration Board by reason of the powers
  
  conferred by Proclamation (IX of 1124) dated 29th June, 1949, promulgated by
  
  the Maharaja of Cochin.