Ki-Moon declared: “You are highly respected by world leaders, including myself. Your persona has given your country a positive image.”
The United Nations' scribe stated that the the global body recognised President Buhari's government's achievements against the Boko Haram insurgents.
He, however, urged that human rights be upheld always in order to prevent a repeat of the scenario being witnessed in Syria.
Ki-moon also thanked the Nigerian leader for his commitment to issues on climate change, adding that the government should "own the Sustainable Development Goals (SDGs)," for the good of its citizens.
President Muhammadu Buhari told the United Nations Secretary-General, Ban Ki-moon, that Nigeria will welcome intermediaries from the global body in swapping the over 200 abducted Chibok schoolgirls with Boko Haram prisoners.
The presidential spokesman, Mr Femi Adesina, in a statement Thursday, quoted Buhari as speaking during a bilateral meeting with the UN scribe at the sidelines of the 71st UN General Assembly in New York.