Deuteronomy 24:17 "You shall not pervert the judgment of the stranger or the or the orphan"

A judge may not consider the sensitive nature of an orphan or "Ger" (convert to Judaism) while sitting in judgment.

He must base his verdict on fact.

This Negative Mitzvah cautions the judge not to give a lenient judgment because he has consideration for the sensitive nature of the person he is judging.