Rashi on TanakhEsther 8

what he was to her how he was related to her.

to avert the harm of Haman that his evil plan should not be realized.

Behold the house of Haman, etc. And from now on everyone will see that I desire you, and whatever you say, everyone will believe that it comes from me; therefore, you do not have to rescind them, but write other letters as you see fit.

cannot be rescinded It is not fitting to rescind it and to invalidate the king’s writ.

according to its script with its characters.

according to its tongue the spoken language.

by the couriers the horsemen, whom the king commanded to hasten (lit. to run).

the camels Heb. הָאֲחַשְּׁתְּרָנִים. a type of camel that runs swiftly.

and to take their spoils for plunder as was written in the first [letters], but they”—upon the spoils they did not lay their hands,” for they showed everyone that it was not done for the sake of money.

The copy an explicit letter.

hastened They hastened them to act swiftly, because they had no time, since they had to get ahead of the first couriers to overtake them.

and a wrap of linen Heb. וְתַכְרִיך בּוּץ, a wrap of linen, a shawl in which to enwrap oneself.

became Jews מִתְיַהֲדִים, became proselytes.