Mishneh Torah — Positive Mitzvot מצוות עשה, Chapter 185
The full Hebrew text of Mishneh Torah, Positive Mitzvot, Chapter 185, with English translation by Maimonides (Rambam).
לאבד עבודה זרה וכל משמשיה, שנאמר: "אבד תאבדון את כל המקומות" (דברים יב,ב).
To destroy false gods and all their objects of worship, as [Deuteronomy 12:2] states: "You shall surely destroy...."