Judicial powers
Section 6(4)(a) · 1999 Constitution (2004 edition)
What Constitution says
(a) the National Assembly or any House of Assembly from establishing courts, other than those to which this section relates, with subordinate jurisdiction to that of a High Court;
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 20–21. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections