Right to fair hearing
Section 36(12) · 1999 Constitution (2004 edition)
What Constitution says
(12) Subject as otherwise provided by this Constitution, a person shall not be convicted of a criminal offence unless that offence is defined and the penalty therefor is prescribed in a written law, and in this subsection, a written law refers to an Act of the National Assembly or a Law of a State, any subsidiary legislation or instrument under the provisions of a law.
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 36–38. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections