Daniel 6:10, 15

But when Daniel learned that the law had been signed, he went home and knelt down as usual in his upstairs room, with its windows open toward Jerusalem. He prayed three times a day, just as he had always done, giving thanks to his God.

In the evening the men went together to the king and said, “Your Majesty, you know that according to the law of the Medes and the Persians, no law that the king signs can be changed.”