law: Hindu Marriage Act, 1955
  8. Registration of Hindu marriages.-
  (1) For the purpose of facilitating the proof of Hindu
  
  marriages, the State Government may make rules providing that the parties to
  
  any such marriage may have the particulars relating to their marriage entered
  
  in such manner and subject to such conditions as may be prescribed in a Hindu
  
  Marriage Register kept for the purpose.
  (2) Notwithstanding anything contained in sub-section (1), the
  
  State Government may, if it is of opinion that it is necessary or expedient so
  
  to do, provide that the entering of the particulars referred to in sub-section
  
  (1) shall be compulsory in the State or in any part thereof, whether in all cases
  
  or in such cases as may be specified, and where any such direction has been
  
  issued, any person contravening any rule made in this behalf shall be
  
  punishable with fine which may extend to twenty-five rupees.
  (3) All rules made under this section shall be laid before the
  
  State Legislature, as soon as may be, after they are made.
  (4) The Hindu Marriage Register shall at all reasonable times be
  
  open for inspection, and shall be admissible as evidence of the statements
  
  therein contained and certified extracts there from shall, on application, be
  
  given by the Registrar on payment to him of the prescribed fee.
  (5) Notwithstanding anything contained in this section, the
  
  validity of any Hindu marriage shall in no way be affected by the omission to
  
  make the entry.