The Al Hanisim for Purim mentions Haman's plot to kill every single Jew. However the list of victims ends with a seemingly unnecessary point that not only will they be killed, but their possessions taken for plunder.

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> בִּקֵּשׁ לְהַשְׁמִיד לַהֲרוג וּלְאַבֵּד אֶת כָּל הַיְּהוּדִים מִנַּעַר וְעַד זָקֵן טַף וְנָשִׁים בְּיום אֶחָד. בִּשְׁלשָׁה עָשר לְחדֶשׁ שְׁנֵים עָשר. הוּא חדֶשׁ אֲדָר. **וּשְׁלָלָם לָבוז**: 
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> when he sought to destroy, murder, and to eliminate all the Jews, from the young to the old, infants and women, in one day, on the thirteenth of the twelfth month of Adar, and **plunder their wealth**.
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Seems disconnected from the immediately preceding statement, the date of the plot, as well as redundant since everyone is dead. Why is this mentioned?