For the purpose of facilitating the application of any law in relation to the State of Bihar or Uttar Pradesh, the appropriate Government may, before the expiration of one year from the appointed day, by order make such adaptations and modifications of the law, whether by way of repeal or amendment as may be necessary or expedient, and thereupon every such law shall have effect subject to the adaptations or modifications so made until altered, repealed or amended by a competent Legislature or other competent authority.
     Explanation.—In this section, the expression "appropriate Government" means as respects any law relating to a matter enumerated in the Union List, the Central Government, and as respects any other law, the State Government