Parashas Metzora · Passuk 14:36
Chabad.org — English translation + Rashi
Torah Temima points to Negaim 12:5.
English: “And it shall not become tamei …” — R’ Meir said: What would become tamei for him? If you say his wooden vessels, garments, and metal vessels — he can immerse them and they become pure. For what did the Torah show concern? For his earthenware vessels and his flask.
Protection of earthenware
Chazal explain that the requirement to empty the house before the kohen’s inspection is primarily to protect earthenware vessels, which cannot be purified by immersion once they become tamei.