Tenure of office and pension rights of judicial officers
Section 291(3)(a) · 1999 Constitution (2004 edition)
What Constitution says
(a) for a period of not less than fifteen years shall, if he retires at or after the age of sixty- five years in the case of the Chief Justice of Nigeria, a Justice of the Supreme Court, the President of the court of Appeal or a Justice of the Court of Appeal or at or after the age of sixty years in any other case, be entitled to pension for life at a rate equivalent to his last annual salary and all his allowances in addition to any other retirement benefits to which he may be entitled;
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 120. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections