Democratic presidential hopeful Bernie Sanders on Sunday refused to call for primary rival Hillary Clinton to release transcripts of speeches she gave to big banks before running for president.

{mosads}Asked when he would like the former secretary of State to make her remarks public, Sanders said he had no opinion.

“I have no idea what she said, and I think the decision as to whether or not to release it is her decision,” Sanders said on CNN’s “State of the Union.”

When pressed by host Jake Tapper on whether he had a position on the issue, Sanders simply shook his head.

Sanders has previously attacked Clinton for her supposedly cozy relationship with Wall Street.

Clinton and her husband, former President Bill Clinton, have made $153 million in paid speeches since 2001, several of which have been to big banks like Goldman Sachs and UBS.

The former first lady said at last week’s Democratic primary debate that she would “look into” releasing the transcripts.