A. S. Krishna vs State Of, Madras.(With Connected ... on 28 November, 1956
b) Where the encroachment is ostensibly ancillary but in
truth beyond the competence of the enacting
authority, the statute will be a colourable piece of
legislation and Constitutionally invalid (A.S. Krishna
v. State of madras (supra); A.B. Abdul Kadir v.
State of Kerala (1976) 3 SCC 219, 232; Federation
of Hotel & Restaurant v. Union of India (supra at
p.651). If the statute is legislatively competent the
enquiry into the motive which persuaded Parliament
or the State legislature into passing the Act is
irrelevant.