According to TMZ, the ring return of former five division world champion Floyd Mayweather has been called off at the last minute.

Mayweather was scheduled to take part in an exhibition fight on Saturday night against former sparring partner Don Moore on the Burj Al Arab hotel helipad.

The event will no longer go down following the death of United Arab Emirates President, Sheikh Khalifa bin Zayed Al Nahyan.

Government officials, according to WAM, the official UAE news agency, have suspended "work in ministries, departments, federal and local institutions, and the private sector" for the next three days due to Sheikh Khalifa's passing ... and, according to TMZ's sources, that means the Mayweather-Moore cannot happen this weekend.

The news outlet indicates that the event promoters could attempt to reschedule the match for some time next week. UFC star Anderson Silva and former world champions Badou Jack and Delfine Persoon were scheduled for action on the undercard.

Mayweather has yet to comment on the fight's cancelation, but he did mourn Sheikh Khalifa's death in an Instagram post early Friday morning.

"Sending my condolences to the entire UAE," he said. "RIP Sheikh Khalifa bin Zayed."

Mayweather and Moore have both been in Dubai the past few days promoting the fight ... with Moore saying he was legitimately gunning to beat the 50-0 Hall of Famer.

The fight with Moore was just the third exhibition clash Mayweather has taken since retiring from the sport in the aftermath of stopping Conor McGregor in 2017. Mayweather demolished Japanese kickboxing star Tenshin Nasukawa in an exhibition in 2018 and fought Youtube star Logan Paul in a non-scored exhibition in 2021.