Procedure for proclamation of state of emergency
Section 305(2) · 1999 Constitution (2004 edition)
What Constitution says
(2) The President shall immediately after the publication, transmit copies of the Official - Gazette of the Government of the Federation containing the proclamation including the details of the emergency to the President of the Senate and the Speaker of the House of Representatives, each of whom shall forthwith convene or arrange for a meeting of the House of which he is President or Speaker, as the case may be, to consider the situation and decide whether or not to pass a resolution approving the Proclamation.
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 124–125. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections