TT #97 · Parshas Shemini · Aliyah 6 · Passuk 4
Chabad.org — Vayikra Chapter 11 with Rashi
English: “Only this you shall not eat”: the verse excludes the flesh of creatures that walk on two legs from the specific prohibition derived here.
Sifra (Toras Kohanim), Shemini, Chapter 3.
Sefaria — Sifra, Shemini, Chapter 3
אַךְ אֶת זֶה. יָכוֹל אַף בְּשַׂר מְהַלְּכֵי שְׁתַּיִם אָסוּר? תַּלְמוּד לוֹמַר אַךְ אֶת זֶה.
Textual limitation — The Chazal derives the teaching from the wording or classification in the verse.
The limiting word אך is read to exclude human flesh from the prohibition stated here; Torah Temimah identifies this as the Toras Kohanim derashah and then discusses the Rambam, Ramban, and Rashba.