This is of course wrong, no matter what the comment was, but it is strange that the article does not say what the comment was.
If someone published the comment, they'd be dodging assassination attempts, like Salman Rushdie [1] and the staff of Charlie Hebdo.[2]
If you want a better source for Saudi Arabia and Sri Lanka, look for a newspaper that is a lot closer to them than the U.S. version of the Daily Mirror is. Even the U.K. version of the Daily Mirror would not be a good source for this sort of thing.
* https://tamilguardian.com/content/explainer-sivarasa-anojan-...
It was apparently something derogatory about the profit Muhammad according to other reporting. Though I guess news outlets are skeptical to mention the profit Muhammad.