עַל־כֵּ֖ן יִתְרָ֣ה עָשָׂ֑ה וּפְקֻדָּתָ֔ם עַ֛ל נַ֥חַל הָעֲרָבִ֖ים יִשָּׂאֽוּם׃
Therefore the abundance they have gotten, And that which they have laid up, Shall they carry away to the brook of the willows.
Read midrashic interpretation of Isaiah 15:7: and classical rabbinic exegesis.