In the account of the fighting, the text repeatedly notes that the Jews laid no hand on the plunder (Esther 9:10). The same point is restated for the wider provinces, again saying they did not take plunder (Esther 9:16).
In Esther 9:5–10 the story reports that the Jews carried out authorized violence against those identified as their enemies. The writer describes the action in sweeping terms, then narrows to the capital area of Susa, where 500 men are said to have been killed. The passage then lists the ten sons of Haman as also killed. These verses sit inside the larger account of the “reversal” day when the earlier plan to harm the Jews is turned back onto their attackers (Esther 9).
Esther 9:5–10 reports a successful, violent reversal: the Jews kill people described as their “enemies” and “those who hated them” (explicit). The account moves from a broad summary (verse 5) to a local count in Susa (verse 6), then to the naming of Haman’s ten sons (verses 7–10) (explicit).
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with Esther 9:10, then read the surrounding section so the answer stays connected to the passage's flow.
10the ten sons of Haman the son of Hammedatha, the Jew`s enemy, killed they; but they didn`t lay their hand on the spoil.