אִם־בֹּֽצְרִים֙ בָּ֣אוּ לָ֔ךְ לֹ֥א יַשְׁאִ֖רוּ עֽוֹלֵל֑וֹת אִם־גַּנָּבִ֥ים בַּלַּ֖יְלָה הִשְׁחִ֥יתוּ דַיָּֽם׃
If grape-gatherers came to thee, Would they not leave some gleaning grapes? If thieves by night, Would they not destroy till they had enough?
Read midrashic interpretation of Jeremiah 49:9: and classical rabbinic exegesis.