law: Foreign Contribution (Regulation) Act, 2010
  6. Restriction on
  
  acceptance of foreign hospitality. -
  No member of a
  
  Legislature or office-bearer of a political party or Judge or Government
  
  servant or employee of any corporation or any other body owned or controlled by
  
  the Government shall, while visiting any country or territory outside India,
  
  accept, except with the prior permission of the Central Government, any foreign
  
  hospitality:
  Provided that it shall not be necessary to
  
  obtain any such permission for an emergent medical aid needed on account of
  
  sudden illness contracted during a visit outside India, but, where such foreign
  
  hospitality has been received, the person receiving such hospitality shall
  
  give, within one month from the date of receipt of such hospitality an
  
  intimation to the Central Government as to the receipt of such hospitality, and
  
  the source from which, and the manner in which, such hospitality was received
  
  by him.