Elon Musk came out swinging against President Donald Trump’s “Big Beautiful Bill” on Tuesday, slamming the reconciliation package as a “disgusting abomination” in a massive break from the president just days after stepping away from his role in the administration.

“I’m sorry, but I just can’t stand it anymore,” Musk wrote on his social media platform X. “This massive, outrageous, pork-filled Congressional spending bill is a disgusting abomination. Shame on those who voted for it: you know you did wrong. You know it.”

Musk, who Trump had tapped to lead the federal expense-slashing Department of Government Efficiency, went on to criticize the bill for setting up Congress to “increase the already gigantic budget deficit to $2.5 trillion (!!!)” and saddle Americans with “crushingly unsustainable debt.”

Musk’s comments come as the bill is set to face Senate scrutiny after narrowly passing in the House last month.

The harsh rebuke of legislation pushed by Trump — who said in May that the bill was “arguably the most significant piece of Legislation that will ever be signed in the History of our Country” — marks the most severe split between the Trump ally and the president.

White House press secretary Karoline Leavitt brushed off Musk’s criticism, which he posted as she was at the briefing room podium. “The president already knows where Elon Musk stood on this bill,” she said. “It doesn’t change the president’s opinion.”