Constitution of India, 1949
263.Provisions with respect to an inter-State Council.-
If any time it appears to the President that the public interests would be served by the establishment of a Council charged with the duty of-
(a) inquiring into and advising upon disputes which may have arisen between States;
(b) investigating and discussing subjects in which some or all of the States, or the Union and one or more of the States, have a common interest; or
(c) making recommendations upon any such subject and, in particular, recommendations for the better co-ordination of policy and action with respect to that subject, in shall be lawful for the President by order to establish such a Council, and to define the nature of the duties to be performed by it and its organization and procedure.