Esther 8:7-8

7King Ahasuerus said to Queen Esther and Mordecai the Jew, “I have decided to give Haman’s estate to Esther and had him hanged on the gallows, because he stretched out his hand against the Jews.

8Now write in the king’s name on behalf of the Jews what seems good to you and seal it with the king’s signet ring. For a decree that is written in the king’s name, and sealed with the king’s ring, cannot be revoked.”