Esther 3:8

3:8 Then Haman said to King Ahasuerus, “There is a particular people that is dispersed and spread among the inhabitants throughout all the provinces of your kingdom whose laws differ from those of all other peoples. Furthermore, they do not observe the king’s laws. It is not appropriate for the king to provide a haven for them.

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 Any decree that is written in the king’s name and sealed with the king’s signet ring cannot be rescinded.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 9:27

9:27 Therefore, because of the account found in this letter and what they had faced in this regard and what had happened to them, the Jews established as binding on themselves, their descendants, and all who joined their company that they should observe these two days without fail, just as written and at the appropriate time on an annual basis.