Appointment of persons learned in Islamic personal law and Customary law
Section 288(2)(a) · 1999 Constitution (2004 edition)
What Constitution says
(a) a person shall be deemed to be learned in Islamic personal law if he is a legal practitioner in Nigeria and has been so qualified for a period of not less than fifteen years in the case of a Justice of the Supreme Court or not less than twelve years in the case of a Justice of the Court of Appeal and has in either case obtained a recognized qualification in Islamic law from an institution acceptable to the national Judicial Council; and
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 119. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections