Mr Buhari who seeks a second term in office gave the assurance on Friday at Uyo, the state capital of Akwa Ibom State.
Mr Buhari who emerged winner of this year's presidential race is expected to begin his second term on May 29.
Mr El-rufai came under criticism on Wednesday for threatening to sniff out lives of foreigners who do not mind their businesses as Nigerians goes to elect its leaders next week.
Festus Keyamo, the Director, Strategic Communications of President Muhammadu Buhari Campaign Organisation, has opined why the country recently emerged the headquarters...
Mr Melaye and the police have had a running battle since the senator was named by suspects in a murder case.
But the group has come out to admit that monetary discussion actually held during the meeting.
Mr Buhari who defeated his predecessor to clinch the position in 2015 general election has again trounced his main challenger, Atiku Abubakar of the Peoples Democratic Party (PDP).
Oshiomhole urged Nigerians to return President Muhammadu Buhari for a second term in office.
Mr Lawal was sacked in 2017 following the recommendation of a three-man panel headed by Yemi Osinbajo, Vice President, which investigated the allegation against the former official.
Sani said those who will carry out the campaign may be assaulted while trying to do their assignment.