Avos 1:8-9

Avos 1:8

Yehuda ben Tabai and Shimon ben Shetach received the Torah from Yehoshua ben Prachya and Nitai of Arbel. Yehuda ben Tabai said that judges should not act like the lawyers (advising the litigants how to plead their cases). When the litigants stand before you, consider them as if they’re guilty but when the trial is over, view them as innocent as soon as they accepted the court’s decision.

Avos 1:9

Shimon ben Shetach said to be diligent in examining witnesses and to be careful in one’s choice of words, lest they infer what you’re thinking and tailor their testimonies to satisfy what they think you want to hear.