You can listen to the recording on the article.
From the text:
The recording, which first aired on CNN’s “Anderson Cooper 360,” includes new details from the conversation that is a critical piece of evidence in special counsel Jack Smith’s indictment of Trump over the mishandling of classified information, including a moment when Trump seems to indicate he was holding a secret Pentagon document with plans to attack Iran.
He’s also copped to it being real, but claimed the documents were “news papers.” That was a couple obvious lies ago, I’m sure people are forgetting it.