Speaking in prayer

Is there a source that everything that is not forbidden is permitted? Or so it turns out.
It is known that the Papalans peppered it with this (an interesting example - Mahrikh, as I think, is in the root Kalt on the root Adal)

This is the “principle of legality”. Why did he call me Sabra?! At first everything was permitted and then some things were forbidden to us. What was not forbidden remained permitted. Presumptuous.

I didn't understand, that's the discussion itself, what was in the beginning. And from the principle of legality, you certainly didn't prove it. Or maybe the explanation is the opposite, everything was forbidden, and the Torah came and permitted some parts. (And it doesn't matter the form of the Torah, whether it is negative or affirmative)

That is, before the Torah was given, everything was forbidden? And now do you have a source that permits eating caraway bread? It is a waste of time to discuss these frivolous matters.

It is known that Noah and his sons were permitted to eat animals. And what is then permitted? Where was it forbidden for them?

I hope this is not a continuation of the unnecessary discussion above.
Probably explains. What do you take something that is not yours? Especially irreversible use of his body. And also in paradise: of the fruit of the tree of the garden you may eat…