Esther 8:7-8

So King Ahasuerus said to Queen Esther and to Mordecai the Jew, “Behold, I have given the house of Haman to Esther, and him they have hanged on the gallows because he had stretched out his hands against the Jews. Now you write to the Jews as you see fit, in the king’s name, and seal it with the king’s signet ring; for a decree which is written in the name of the king and sealed with the king’s signet ring may not be revoked.”