Tenure of seat of members (National Assembly)
Section 68(1)(h) · 1999 Constitution (2004 edition)
What Constitution says
(h) the President of the Senate or, as the case may be, the Speaker of the House of Representatives receives a certificate under the hand of the Chairman of the Independent National Electoral Commission stating that the provisions of section 69 of this Constitution have been complied with in respect of the recall of that member.
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 49–50. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections