Esther 9:17-19

This was done on the thirteenth day of the month of Adar, and on the fourteenth day they rested and made it a day of feasting and rejoicing. But the Jews who were in Susa assembled on the thirteenth and on the fourteenth of the same month, and on the fifteenth day they rested and made it a day of feasting and rejoicing. Therefore the Jews of the villages, who live in the rural [unwalled] towns, make the fourteenth day of the month of Adar a holiday for rejoicing and feasting and sending choice portions of food to one another.