law: Indian Christian Marriage Act,1872 
  37. Registration of marriages between
  
  Indian Christians, by persons referred to in clauses (1), (2) and (3) of
  
  section 5.
  When any marriage
  
  between 13[Indian] Christians is solemnized 24[by any
  
  such person, Clergyman or Minister of Religion as is referred to in clause (1),
  
  clause (2), or clause (3) of section 5], the person solemnizing the same shall,
  
  instead of proceeding in the manner provided by section 28 to 36, both
  
  inclusive, register the marriage in a separate register-book, and shall keep it
  
  safely until it is filled, or, if he leave the district in which he solemnized
  
  the marriage before the said book is filled, shall make over the same to the
  
  person succeeding to his duties in the said district.
  Custody and disposal of register-book
  Whoever has the
  
  control of the book at the time when it is filled, shall send it to the
  
  Marriage Registrar of the district, or, if there be more Marriage Registrars
  
  than one, to the Senior Marriage Registrar, who shall send it to the 22[Registrar
  
  General of Births, Deaths and Marriages], to be kept by him with the records of
  
  his office.