Tesla CEO Elon Musk zinged Dallas Mavericks minority team owner Mark Cuban Thursday as the two debated diversity, equity and inclusion (DEI) in business.

Musk responded to Cuban after the billionaire gave his opinions on diversity, equity and inclusion. 

“If you don’t think there is a need for DEI and it doesn’t create a competitive advantage for your company, just  look at the @x posts/replies/quotes below,” Cuban wrote.

“These are the same people that work for you or are your co-workers. Everyone is entitled to their POV, but these same feelings, even if they are not said out-loud, are heard loud and clear at work.”

Musk responded with a pointed question about the makeup of the Mavericks’ roster.