TT #199 · Parshas Shemini · Aliyah 7 · Passuk 34
Chabad.org — Vayikra Chapter 11 with Rashi
English: “That may be eaten”: this excludes food that has spoiled and is no longer fit to eat.
Yerushalmi Terumot 11:2.
Sefaria — Jerusalem Talmud, Terumot 11:2
Textual exclusion — The Chazal derives the stated rule directly from the wording of the verse.
Spoiled food is excluded.