Permanent incapacity of President or Vice-President
Section 144(5) · 1999 Constitution (2004 edition)
What Constitution says
(5) In this section, the reference to "executive council of the Federation" is a reference to the body of Ministers of the Government of the Federation, howsoever called, established by the President and charged with such responsibilities for the functions of government as the President may direct.
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 72–73. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections