300. This Constitution of the Republic of India may be amended by a law of the Federal Legislature adopted by a majority of not less than two-thirds of the votes cast in two different sessions at the interval of at least three months. Provided that the provisions of this Constitution to the extent they relate to the Constitution of the Units or Sub-Units may be amended by a Federal Law passed by a majority of the total membership of the Federal Legislature in case the amendment concerned is desired by the Legislature on the Unit or Sub-Unit concerned with two-thirds majority of votes cast.