Daniel 6:12

And they approached and spoke to the king about the edict. "O king, did you not decree that every man who makes a request to any of the gods or men for thirty days, except to yourself, O king, would be cast into the den of lions?" To which the king replied, saying, "The sentence is true, and according to the decree of the Medes and Persians, it is not lawful to violate it."