The States Reorganisation Act,1956
Section 5. Formation of Kerala State
(1) As from the appointed day, there shall be formed a new Part A State to be known as the State of Kerala comprising the following territories, namely:-
(a) The territories of the existing State of Travancore-Cochin, excluding the territories transferred to the State of Madras by section 4; and (b) The territories comprised in-
(i) Malabar district, excluding the islands of Laccadive and Minicoy, and
(ii) Kasaragod taluk of South Kanara district;
And thereupon the said territories shall cease to form part of the States of Travancore-Cochin and Madras, respectively.
(2) The territories specified in clause (b) of sub-section (1) shall form a separate district to be known as Malabar district in the State of Kerala.