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 they have hanged him on the wooden gallows because he had reached out with his hand 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.”