Sforno on Exodus 23:7/ספורנו על שמות כ״ג:ז׳

1מדבר שקר תרחק, the Torah addresses the judge, telling him to stay clear of anything which could create the impression that he has dealings with something corrupt. Our sages enlarge on this, cautioning that the judge must be careful with all his utterances so that a liar cannot exploit his words for his own nefarious purposes. (Avot 1,9)