Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 11
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 11, with English translation by Maimonides (Rambam).
שלא להקים מצבה, שנאמר "ולא תקים לך, מצבה" (דברים טז,כב).
Not to erect a pillar [for purposes of worship], as [Deuteronomy 16:22] states: "Do not erect a pillar for yourselves."