The Text
The Supreme Court shall have jurisdiction, to the exclusion of any other court of law in Nigeria, to hear and determine appeals from the Court of Appeal.
Source · Constitution of the Federal Republic of Nigeria, 1999, as amended · §233
All sections in Chapter VII — The Judicature
Methodology
Tier 1 · primary
Courts. Gazettes. National archives.
Tier 2 · corroborating
OCCRP. HRW. BudgIT. TheCable.
Redline
Wikipedia is never a source.