Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 195
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 195, with English translation by Maimonides (Rambam).
שלא לאכול ולשתות דרך זולל וסובא, שנאמר "בננו זה . . . זולל, וסובא" (דברים כא,כ).
Not to eat or drink like a glutton and a drunkard, as [Deuteronomy 21:20] states: "This son of ours is a glutton and a drunkard." 7:1, where the Rambam discusses this prohibition, he quotes a different prooftext.