Article 247 of Constitution of India "Power of Parliament to provide for the establishment of certain additional courts"
Notwithstanding anything in this Chapter, Parliament may by law provide for the establishment of any additional courts for the better administration of laws made by Parliament or of any existing laws with respect to a matter enumerated in the Union List.
Article 248 of Constitution of India "Residuary
powers of legislation"
(1)Parliament has exclusive power to make any law with
respect to any matter not enumerated in the Concurrent List
or State List.
(2) Such power shall include the power of making any law
imposing a tax not mentioned in either of those Lists.