Deuteronomy 16:19

לא תטה משפט means what it literally implies: THOU SHALT NOT PERVERT JUDGMENT. ולא תכיר פנים AND THOU SHALT NOT RESPECT PERSONS — not even if it be only during the pleadings of the parties. This is an admonition addressed to the judge that he should not be lenient to one and harsh to the other, e.g. letting one stand and the other sit; because as soon as he (the party treated harshly) observes that the judge shows more respect to his fellow his ability to plead is hampered (i.e. he loses self-confidence and cannot present his case with assurance) (cf. Shevuot 30a). ולא תקח שחד NEITHER TAKE BRIBERY — even if you mean to give a just judgment in favor of the giver (Sifrei Devarim 144:10; cf. Rashi on Exodus 23:8). כי השחד יעור FOR BRIBERY DOES BLIND — As soon as he (the judge) has accepted a bribe from him (from one of the parties) it is impossible for him not to incline his heart to him trying to find something in his favor (Ketuvot 105b). דברי צדיקם means, the words which have been described by the term “righteous” viz., the judgments of truth uttered on Sinai (cf. Rashi on Exodus 22:8 and Note thereon).

לֹא־תַטֶּ֣ה מִשְׁפָּ֔ט לֹ֥א תַכִּ֖יר פָּנִ֑ים וְלֹא־תִקַּ֣ח שֹׁ֔חַד כִּ֣י הַשֹּׁ֗חַד יְעַוֵּר֙ עֵינֵ֣י חֲכָמִ֔ים וִֽיסַלֵּ֖ף דִּבְרֵ֥י צַדִּיקִֽם׃

Thou shalt not wrest judgment; thou shalt not respect persons, neither take a bribe: for a bribe blinds the eyes of the wise, and perverts the words of the righteous.