Article 73 of the Indian constitution states
Subject to the provisions of this Constitution, the executive power of the Union shall extend - to the matters with respect to which Parliament has power to make laws; and,to the exercise of such rights, authority and jurisdiction as are exercisable by the Government of India by virtue of any treaty of agreement:Provided that the executive power referred to in sub-clause (a) shall not, save as expressly provided in this Constitution or in any law made by Parliament, extend in any State to matters with respect to which the Legislature of the State has also power to make laws.
Until otherwise provided by Parliament, a State and any officer or authority of a State may, notwithstanding anything in this article, continue to exercise in matters with respect to which Parliament has power to make laws for that State such executive power or functions as the State or officer or authority thereof could exercise immediately before the commencement of this Constitution.
This specific line
Provided that the executive power referred to in sub-clause (a) shall not, save as expressly provided in this Constitution or in any law made by Parliament, extend in any State to matters with respect to which the Legislature of the State has also power to make laws.
seems to refer to the concurrent list where both the states and the center have the power to make laws
https://en.m.wikipedia.org/wiki/Concurrent_List
Is this true ? I couldn't find anything to expand upon this