Nigeria's president has been absent for more than three months in 2017, but his wife says that he will soon make a strong return.
Muhammadu Buhari has been out of the country for almost three months in 2017 as Nigeria battles recession and insurgency.
Muhammadu Buhari, 74, has rarely been seen in public since returning from seven weeks of sick leave in March.
Zahra Buhari is marrying the son of a multi-millionaire oil baron.
The Nigerian first lady previously said she may not campaign for her husband at the next election.