Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 275
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 275, with English translation by Maimonides (Rambam).
שלא לכבד גדול בדין, שנאמר "וְלֹא תֶהְדַּר פְּנֵי גָּדוֹל" (ויקרא יט, טו).
Not to honor a man of stature in judgment, as [Leviticus 19:15] states: "Do not show respect to a great man."