Daniel 6:6-9

Then these commissioners and satraps came by agreement to the king and spoke to him as follows: “King Darius, live forever! All the commissioners of the kingdom, the prefects and the satraps, the high officials and the governors have consulted together that the king should establish a statute and enforce an injunction that anyone who makes a petition to any god or man besides you, O king, for thirty days, shall be cast into the lions’ den. Now, O king, establish the injunction and sign the document so that it may not be changed, according to the law of the Medes and Persians, which may not be revoked.” Therefore King Darius signed the document, that is, the injunction.