Esther 9:16-19

Now the rest of the Jews who were in the king’s provinces also gathered to defend their lives, and got relief from their enemies and killed 75,000 of those who hated them, but they laid no hands on the plunder. This was on the thirteenth day of the month of Adar, and on the fourteenth day they rested and made that a day of feasting and gladness. But the Jews who were in Susa gathered on the thirteenth day and on the fourteenth, and rested on the fifteenth day, making that a day of feasting and gladness. Therefore the Jews of the villages, who live in the rural towns, hold the fourteenth day of the month of Adar as a day for gladness and feasting, as a holiday, and as a day on which they send gifts of food to one another.