TT #176 · Parshas Shemini · Aliyah 5 · Passuk 32
Chabad.org — Vayikra Chapter 11 with Rashi
English: And anything upon which one of them falls when dead shall be impure, including any vessel of wood or cloth or skin or sack; it shall be put into water, and it shall remain impure until evening, then it shall be clean.
Chullin 74a.
E-Daf.com — Chullin 74a (Tsurras Hadaf)
Application by contact — The verse extends the carcass impurity to objects upon which the dead creature falls.
Death causes the relevant detachment status; slaughter does not.