Exodus 25:3

זהב וכסף ונחשת וגו׳ GOLD AND SILVER AND COPPER etc. — All these came (were brought) as voluntary gifts, each man giving as his heart prompted him, except that silver which was brought by all in equal quantities (cf. Rashi above), a half shekel by each person. For we do not find in the account of the entire work connected with the Tabernacle that any silver was needed for the work there described in detail over and above this, for it is said, (Exodus 38:25-26) “And the silver of them who were numbered of the congregation [was an hundred talents, etc.] … a beka for every man etc.” and vv. 27 and 28 inform us that of this silver were made the Sockets and the hooks. Of the other silver which came (was brought) there, as a free-will gift they made the holy vessels (lit., vessels for service), and it is this silver that is referred to in this verse and which is stated in the preceding verse as having been brought voluntarily.

And this is the offering which you shall take of them; gold, and silver, and brass,

וְזֹאת֙ הַתְּרוּמָ֔ה אֲשֶׁ֥ר תִּקְח֖וּ מֵאִתָּ֑ם זָהָ֥ב וָכֶ֖סֶף וּנְחֹֽשֶׁת׃