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.
Beis Din
Why a wealthy litigant in beis din is asked to dress down or provide fine clothing for a poorer opponent, so the judges are not swayed.
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.