Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 125
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 125, with English translation by Maimonides (Rambam).
שלא לאכול בשר הפסח נא ומבושל, שנאמר "אל תאכלו ממנו נא, ובשל" (שמות יב,ט).
Not to eat the meat of the Paschal sacrifice raw or boiled in water, as [Exodus 12:9] states: "Do not eat from it raw or boiled in water."