Parashas Metzora · Passuk 15:23
Chabad.org — English translation + Rashi
Torah Temima points to Toras Kohanim.
English: “Or on the article …” — this article is the merchav, of which it is said “when he touches it”; and which item has its contact distinguished from its carrying? You must say: this is the merchav.
Merchav: contact only, not carrying
Chazal identify the “article” here with the merchav and note that it conveys impurity by contact but not by carrying in the same way as ordinary midras.