Esther 9:16-19

At that same time, all the Jewish people in the king’s empire also met to protect themselves and get rid of their enemies. They killed seventy-five thousand of those who hated them, but they did not take their belongings. This happened on the thirteenth day of the month of Adar. On the fourteenth day they rested and made it a day of joyful feasting. But the Jewish people in Susa met on the thirteenth and fourteenth days of the month of Adar. Then they rested on the fifteenth day and made it a day of joyful feasting. This is why the Jewish people who live in the country and small villages celebrate on the fourteenth day of the month of Adar. It is a day of joyful feasting and a day for exchanging gifts.