Executive powers
Section 5(5) · 1999 Constitution (2004 edition)
What Constitution says
(5) Notwithstanding the provisions of subsection (4) of this section, the President, in consultation with the National Defence Council, may deploy members of the armed forces of the Federation on a limited combat duty outside Nigeria if he is satisfied that the national security is under imminent threat or danger: Provided that the President shall, within seven days of actual combat engagement, seek the consent of the Senate and the Senate shall thereafter give or refuse the said consent within 14 days.
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 19–20. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections