The king gave the orders for this to be done, so a law was announced in Susa, and they hung [the bodies of] Haman's 10 sons.
The Jews in Susa assembled again on the fourteenth day of the month of Adar and killed 300 men in Susa, but they did not seize any plunder.
References for Esther 9:15
The rest of the Jews in the royal provinces assembled, defended themselves, and got rid of their enemies. They killed 75,000 of those who hated them, but they did not seize any plunder.
References for Esther 9:16
[They fought] on the thirteenth day of the month of Adar and rested on the fourteenth, and it became a day of feasting and rejoicing.
But the Jews in Susa had assembled on the thirteenth and the fourteenth days of the month. They rested on the fifteenth day of the month, and it became a day of feasting and rejoicing.
This explains why the rural Jews who live in villages observe the fourteenth day of the month of Adar as [a time of] rejoicing and feasting. It is a holiday when they send gifts to one another.
Mordecai recorded these events and sent letters to all the Jews in all of King Ahasuerus' provinces, both near and far.
[He ordered] them to celebrate the fourteenth and fifteenth days of the month Adar every year
because during those days the Jews got rid of their enemies. That was the month when their sorrow was turned into rejoicing and their mourning into a holiday. They were to be days of feasting, rejoicing, and of sending gifts to one another and the poor.
References for Esther 9:22
So the Jews agreed to continue the practice they had begun, as Mordecai had written them to do.
For Haman son of Hammedatha the Agagite, the enemy of all the Jews, had plotted against the Jews to destroy them. He cast the Pur (that is, the lot) to crush and destroy them.
References for Esther 9:24