Courtly Appearances

The Gemara (Shevuos 31a) discusses a situation where two litigants appear before a judge. One is wearing expensive clothing valued at 100 maneh, and one is wearing something akin to rags. The judge is directed to tell the wealthy litigant: “Either you change into cheap threads or rent a tuxedo for your adversary.” The Ben Yehoyada writes that this is true even if the pauper initiated the court case. The wealthy litigant must bear the cost of improving the appearance of the claimant. However, the Ben Yehoyada writes that we would prefer if the wealthy litigant dressed down to regular clothing.
Apparently, clothing worth 100 maneh is so out of the ordinary that the Raavan writes that in his time this halachah was not relevant; no party to a din Torah in the time of the Raavan ever showed up with such expensive clothing. It is possible that we suspect the wealthy litigant in the times of the Gemara of purposely showing up in expensive clothing to bias the judges in his favor. This is in line with the reasoning offered by the Gemara—the judges must distance themselves from falsehood. They may rule incorrectly because of the way the litigants are dressed.