Esther 8:8

8:8 Now you write in the king’s name whatever in your opinion is appropriate concerning the Jews and seal it with the king’s signet ring. Any decree that is written in the king’s name and sealed with the king’s signet ring cannot be rescinded.

Esther 10:2

10:2 Now all the actions carried out under his authority and his great achievements, along with an exact statement concerning the greatness of Mordecai, whom the king promoted, are they not written in the Book of the Chronicles of the Kings of Media and Persia?