PRINCIPLE STATEMENT

Complaints about a hearing not always being before the same bench don't pertain to jurisdiction; it's a complaint about judgment soundness (that judges who didn't see all witnesses couldn't properly appraise evidence), not an extrinsic matter affecting jurisdiction.

RATIO DECIDENDI (SOURCE)

Per Ogundare, JSC, in Shuaibu v. Nigeria-Arab Bank Ltd (1998) NLC-681992(SC) at p. 30; Paras D–E.
"The complaint against a hearing that was not always before the same bench does not pertain to any matter that goes to the jurisdiction of the court. It is at bottom a complaint that the judgment cannot be satisfactory on the ground that as the persons who gave it had not seen and heard all the witnesses, they could not appraise the evidence as a whole and decide the facts properly. Thus, it is a complaint on the soundness of the judgment itself, and not a complaint that is extrinsic of the adjudication, which is the test to apply when considering a submission on jurisdiction."
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EXPLANATION / SCOPE

Jurisdictional challenges concern the court’s authority to hear the case—territorial limits, subject matter, pecuniary limits. Complaints about judgment quality (bench composition changes, evidence evaluation errors) are irregularities, not jurisdictional defects. They affect judgment soundness, not the court’s power to decide. This distinction matters: jurisdictional defects render proceedings void; irregularities make judgments voidable or subject to appeal. Changing bench composition may affect evidence appraisal but doesn’t rob the court of jurisdiction. The test: does the complaint concern matters extrinsic to the adjudication (jurisdiction) or intrinsic to decision quality (irregularity)? This prevents parties from dressing procedural complaints as jurisdictional challenges to obtain nullity rather than mere reversal

CASES APPLYING THIS PRINCIPLE