קֹרֵ֤א דָגַר֙ וְלֹ֣א יָלָ֔ד עֹ֥שֶׂה עֹ֖שֶׁר וְלֹ֣א בְמִשְׁפָּ֑ט בַּחֲצִ֤י ימו [יָמָיו֙] יַעַזְבֶ֔נּוּ וּבְאַחֲרִית֖וֹ יִהְיֶ֥ה נָבָֽל׃
불의로 치부하는 자는 자고새가 낳지 아니한 알을 품음 같아서 그 중년에 그것이 떠나겠고 필경은 어리석은 자가 되리라
Rashi on Jeremiah
but has not laid This cuckoo draws after it chicks that it did not lay. דָגָר - This is the chirping which the bird chirps with its voice to draw the chicks after it, but those whom the cuckoo called will not follow it when they grow up for they are not of its kind. So is one who gathers riches but not by right.