Esther 8:7-8

King Ahasuerus said to Esther the queen and to Mordecai the Jew, “Look, I have given Haman’s estate to Esther,  and he was hanged on the gallows because he attacked  the Jews.  Write in the king’s name whatever pleases you  concerning the Jews, and seal it with the royal signet ring.  A document written in the king’s name and sealed with the royal signet ring cannot be revoked.”