When a judge must explain himself

Hi,


Background: Normally, judges on a Jewish court are not required to present the logic behind their decisions. However, in a particular case (Bava Metzia 69a-b), Rav Pappa explained his decision. Tosafot explains:

"Rav Pappa was required to explain his verdict in this case, specifically, under the principle of 'You shall be innocent from Gd and Israel,' because the litigant had reason to suspect him."

(Tosafot to Bava Metzia 69b כי האי גוונא)

Have a great day,
Mordechai