UFC president Dana White received a surprising message on Twitter recently from a boxing and sports icon.

Muhammad Ali posted a message asking White about himself being the “original” MMA fighter.

White, who has talked about his love for Ali before, immediately responded with “U sir are the original EVERYTHING! Ur the reason combat sports is where it is 2day Great tweet I’ve ever received I’m honored.”

He also stated that he had “no idea” that Ali was on Twitter and recommended everyone follow “The Greatest!”

Of note, on Ali’s account it states that any tweet posted by the former champion himself will come with a special hashtag. The message to White did not, meaning it could have been posted by someone with access to Ali’s account.