The allegation was made by a US non-governmental group, the American Black Group for Democracy which claimed that the money was pledged to the US Secretary of State, John Kerry in Abuja.
However, the Senior Special Assistant to Buhari on Media and Publicity, Garba Shehu has described the accusations as crazy.
Shehu also said that Nigeria doesn’t have that kind of money to throw around.
“What is the craziest accusation made against President Buhari? That he donated $500m to Hillary’s campaign and that Donald Trump is angry. This has gone viral, sadly Nigerians are believing it!” Shehu tweeted on Friday, November 18.
“President Buhari’s Nigeria doesn’t have this kind of money to throw around. Even if the money is there, this President is the least likely person to give it as donation, and for what?" he added.