Senate Minority Leader Harry Reid has not been quiet about his criticism of Republican presidential nominee Donald Trump, and Trump’s response elicited another fiery statement from Reid Friday morning.

Trump said the Nevada Democrat should “go back and start working out again with his rubber workout pieces,” in an interview with The Washington Post on Thursday. The statement is a likely reference to injuries Reid sustained last year, when an exercise band broke during a workout at home, causing him to fall. The senator broke bones in his ribs and face, and is still blind in one eye.

“Donald Trump can make fun of the injury that crushed the side of my face and took the sight in my right eye all he wants — I’ve dealt with tougher opponents than him,” Reid said. The longtime senator, a former amateur boxer, famously battled the mob during his tenure as chairman of the Nevada Gaming Commission.

[Reid Suffers Broken Ribs in Workout Accident]

“I may not be able to see out of my right eye,” Reid said, “but with my good eye, I can see that Trump is a man who inherited his money and spent his entire life pretending like he earned it.”