Max Holloway apologized to Khabib Nurmagomedov after her was ruled medically unfit to compete in the UFC 223 main event.

After Nurmagomedov (25-0 MMA, 9-0 UFC) made weight for the lightweight title fight this morning, news came out shortly after that officials had stopped Holloway’s (19-3 MMA, 15-3 UFC) weight cut due to medical concerns.

As a result, the main-event bout was called off. The UFC currently is planning to have Anthony Pettis (20-7 MMA, 7-6 UFC) serve as a replacement, but the matchup has not yet been made official.

Holloway didn’t appear to be in too dire of a condition after the news broke. He was able to get on social media to send a message to Nurmagomedov. “Blessed” apologized for what happened, but said the situation was out of his hands (via Twitter):

UFC 223 will take place Saturday at Barclays Center in Brooklyn, N.Y. The main card will air on pay-per-view following prelims on UFC Fight Pass.

Holloway accepted the bout with Nurmagomedov on just six days’ notice after Tony Ferguson withdrew due to injury. Although the UFC featherweight champ was moving up to lightweight for the contest, he was not in training camp, and his nutritionist said his weight cut would be “tied for the biggest” he’s ever helped with.

At Thursday’s UFC 223 media day, Holloway would not take questions about exactly what he weighed. However, he said he’s never missed weight and wasn’t about to start at UFC 223. He technically didn’t, because New York State Athletic Commission doctors were responsible for pulling him from the card.

For more on UFC 223, check out the UFC Rumors section of the site.