Ezra 10:8

All his substance should be forfeited - To the use of the temple.

So the Septuagint understood the place: Αναθεματισθησεται πασα ἡ ὑπαρξις αυτου , "All his substance shall be devoted to a holy use."

Himself separated - Excommunicated from the Church of God, and exiled from Israel.