Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 178
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 178, with English translation by Maimonides (Rambam).
שלא לאכול תולעת הפירות כשתצא לאוויר, שנאמר "לכל השרץ, השורץ על הארץ--לא תאכלום" (ויקרא יא,מב).
Not to eat worms that breed in produce after they become exposed to the air, as [Leviticus 11:42] states: "...for any swarming creature which breeds upon the land, you shall not eat them."