Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 130
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 130, with English translation by Maimonides (Rambam).
שלא לאכול מן הקודשים שנטמאו, שנאמר "והבשר אשר ייגע בכל טמא, לא ייאכל" (ויקרא ז,יט).
Not to partake of consecrated foods that have contracted ritual impurity, as [Leviticus 7:19] states: "Meat that has touched any impurity shall not be eaten."