Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 91
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 91, with English translation by Maimonides (Rambam).
שלא להקדיש בעלי מומין למזבח, שנאמר "כול אשר בו מום, לא תקריבו" (ויקרא כב,כ); זה הוא איסור הקדשו.
Not to consecrate animals with disqualifying physical blemishes [as sacrifices to be offered on] the altar, as [Leviticus 22:20] states: "Any [animal] which has a blemish shall not be sacrificed." This prohibition involves [the animal's] consecration.