Section 23
of Malaysia Act
Section 23
(a)
every person born before Malaysia Day who is a citizen of the Federation by virtue of the provisions contained in Part I of the Second Schedule; and
Act 26/1963
(b)
every person born before on or after Malaysia Day, and having any of the qualifications specified in Part II of the Second Schedule; and
(c)
every citizen of Singapore.
(2)
Subject to the provisions of this Part, provision with respect to citizenship of Singapore may be made by the constitution of that State, and may be amended by laws passed by the Legislature of that State and approved by Act of Parliament.
(3)
Citizenship of Singapore shall not be severable from citizenship of the Federation, but a Singapore citizen by the loss of either shall lose the other also (subject to the provision made by this Part for the enrolment of a Singapore citizen as a citizen who is not a Singapore citizen).