The law is settled that the jurisdiction of a Court of record, in its broad and substantive sense, cannot be conferred by the Rules of Court. The Rules of Court are only made, pursuant to the powers conferred on the heads of Courts by the Constitution to make Rules, to regulate practice and procedure in their respective Courts. The Rules they make are only to regulate the practice and procedure in their respective Courts. The Rules do not confer jurisdiction on the Court to entertain causes or matters. Rather, the jurisdiction of Courts in Nigeria is either conferred or vested by the Constitution or the enabling statute establishing the Court.
– E. Eko JSC. Mailantarki v. Tongo (2017) – SC.792/2015