He said the ruling All Progressives Congress (APC) and not him will decide who succeeds him.
He spoke on Thursday while fielding questions from journalists of Arise TV during an exclusive interview.
“We have started registration from ward to local government and to the state level. That way, the APC can know the number of members they have state by state and local government by local government, so that by the time this administration goes, the legacy can continue.
“And that is the best way to go for the party and for the country.”
He also rebuffed claims that joining APC automatically exonerated corrupt leaders from any lingering charges or investigations, saying that those who hold such views are not being fair to his administration.
Speaking on zoning and succession plan, Buhari reiterated that the APC will be the sole deciding factor.
“Shouldn’t we allow the party to decide, I just told you that we started from the bottom to the top.
“Nobody is just going to sit in Lagos and tell them what to do. This is what we are arranging.
“Succession plan depends on the party. The party will sit and make its decision by the constituencies they won.
“So those who want to be president, better join APC.”