לֹא־תַטֶּ֣ה מִשְׁפָּ֔ט לֹ֥א תַכִּ֖יר פָּנִ֑ים וְלֹא־תִקַּ֣ח שֹׁ֔חַד כִּ֣י הַשֹּׁ֗חַד יְעַוֵּר֙ עֵינֵ֣י חֲכָמִ֔ים וִֽיסַלֵּ֖ף דִּבְרֵ֥י צַדִּיקִֽם׃
You shall not judge unfairly: you shall show no partiality; you shall not take bribes, for bribes blind the eyes of the discerning and upset the plea of the just.
Torah Temimah points to Ketubot 105a.
ת״ר, כי השוחד יעור עיני חכמים – אפילו חכם גדול ולוקח שוחד אינו נפטר מן העולם בלא סמיות הלב, ויסלף דברי צדיקים, אפילו צדיק גמור ולוקח שוחד אינו נפטר מן העולם בלא טרוף הדעת.
English: Our Rabbis taught: “For a bribe blinds the eyes of the wise” — even a great sage who takes a bribe does not leave this world without a dulling of the heart. “And perverts the words of the righteous” — even a completely righteous person who takes a bribe does not leave this world without a confusion of the mind.
Ketubot 105a reads the verse as describing the inevitable spiritual and intellectual damage caused by accepting a bribe, not merely as a reason for the prohibition.
Derash on the verse (Bavli sugya) — not a formal named middah of the 13. The verse is taken as describing the consequence that inevitably follows the taking of a bribe.
Even the greatest sage or the most righteous person who accepts a bribe suffers irreversible harm to clarity of judgment and purity of heart.