So they went to the king and spoke to him about his royal decree: "Did you not publish a decree that during the next thirty days anyone who prays to any god or human being except to you, Your Majesty, would be thrown into the lions' den?" The king answered, "The decree stands – in accordance with the law of the Medes and Persians, which cannot be repealed." (NIV)
Then they came near and said before the king concerning his prohibitory decree, Have you not signed an edict that any man who shall make a petition to any god or man within thirty days, except of you, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which cannot be changed or repealed. (AMP)
Then they came near, and spake before the king concerning the king's decree; Hast thou not signed a decree, that every man that shall ask a petition of any God or man within thirty days, save of thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which altereth not. (KJV)