Mode of exercising Federal Legislative power: money bills
Section 59(4) · 1999 Constitution (2004 edition)
What Constitution says
(4) Where the President, within thirty days after the presentation of the bill to him, fails to signify his assent or where he withholds assent, then the bill shall again be presented to the National Assembly sitting at a joint meeting, and if passed by two-thirds majority of members of both houses at such joint meeting, the bill shall become law and the assent of the President shall not be required.
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 46. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections