You’re quite welcome! So haven’t located a video of the comment itself being said, but this Fox News article does reference the phrase. It’s a couple of paragraphs below the photo showing Pres. Trump standing in front of a bunch of flags (17 maybe?).
https://www.foxnews.com/politics/trump-never-concede-pressures-pence-election
From link, I am not clear - was this statement at the Jan 6 rally? Since that speech is archived someplace I could listen to it. Sounds as though it was from the rally from the article.
——Trump said that Pence acting “doesn’t take courage,” but “what takes courage is to do nothing.”