Esther 9:31

Overview - Esther 9
1	The Jews slay their enemies, with the ten sons of Haman.
12	Ahasuerus, at the request of Esther, grants another day of slaughter, and Haman's sons to be hanged.
20	The two days of Purim are made festival.

Esther 9:31  (King James Version)
To confirm these days of Purim in their times appointed, according as Mordecai the Jew and Esther the queen had enjoined them, and as they had decreed for themselves and for their seed, the matters of the fastings and their cry.