(Bamidbar 31:22) "Only the gold and the silver": You say (finished) vessels. But perhaps (the verse is speaking of) golmim (unfinished, undifferentiated metal forms)? It follows (otherwise), viz.: The dead of Israel cause uncleanliness, and the slain of Midian cause uncleanliness. Just as with the dead of Israel (finished) vessels contract uncleanliness, and not golmim, so, with the slain of Midian. R. Yossi Haglili says; (The verse speaks of finished) vessels. You say vessels, but perhaps golmim? It is, therefore, written "Only," to distinguish (between the two.)