Billionaire investor Warren Buffett on Monday night condemned Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE for criticizing the parents of a Muslim soldier killed in Iraq, saying the two businessmen had "sacrificed nothing" in comparison.

"Have you no decency, sir?" Buffett said in remarks directed at Trump during a rally with Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE in Omaha, Neb.

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"No member of Buffett family gone to Iraq and Afghanistan," he said. "No member of Trump family has gone to Iraq and Afghanistan. We’ve both done extremely well."

Buffett is only the latest to criticize Trump for his feud with Khizr Khan, the father of Army Capt. Humayun Khan, who was killed by a suicide bomber in Iraq in 2004.

The elder Khan spoke out against Trump in an address at the Democratic National Convention, saying he had sacrificed nothing and rebuking him for his comments about Muslims.

Over the weekend, Trump responded to Khan, saying that he’s “made a lot of sacrifices” and has worked “very, very hard.”

But Buffett, the Berkshire Hathaway CEO, pushed back against Trump on Monday.

"How in the world can he stand up to a couple of parents who lost their son and talk about sacrificing?" he said.