Yekke – thanks so much for the source.
I read the beginning and he’s talking about a halacha that the person will (only) accept if he gives a source. That’s very different than what I thought you were talking about.
Also, he doesn’t say to give a (incorrect) source per se’; he says to say it in the name of an “אדם גדול”. When you said to give an incorrect source, I thought you meant a written source from earlier generations. Being תולה something on an “אדם גדול” does not sound like the same thing to me.
I would read the rest, but I find it hard to read sources online, and I have to check if I’m allowed to print it out on chol hamoed.
Is there anything later on that’s relevant to this discussion?