Esther 3:10

3:10 So the king removed his signet ring ¹  from his hand and gave it to Haman the son of Hammedatha, the Agagite, who was hostile toward the Jews.

Esther 9:10

9:10 the ten sons of Haman son of Hammedatha, the enemy of the Jews. But they did not confiscate their property.

Esther 9:24

9:24 For Haman the son of Hammedatha, the Agagite, the enemy of all the Jews, had devised plans against the Jews to destroy them. He had cast pur (that is, the lot) in order to afflict and destroy them.

[3:10]  ¹ sn Possessing the king’s signet ring would enable Haman to act with full royal authority. The king’s ring would be used to impress the royal seal on edicts, making them as binding as if the king himself had enacted them.