TT #234 · Parshas Shemini · Aliyah 7 · Passuk 40
Chabad.org — Vayikra Chapter 11 with Rashi
English: “And the one who eats from its carcass”: an impurity swallowed internally does not convey impurity in the ordinary manner.
Chullin 71a.
E-Daf.com — Chullin 71a (Tsurras Hadaf)
Halachic distinction — The Chazal applies the verse’s wording to establish the stated rule.
Internal absorbed impurity does not operate as ordinary external impurity.