כָּל־קֳבֵ֤ל דְּנָה֙ בֵּהּ־זִמְנָ֔א קְרִ֖בוּ גֻּבְרִ֣ין כַּשְׂדָּאִ֑ין וַאֲכַ֥לוּ קַרְצֵיה֖וֹן דִּ֥י יְהוּדָיֵֽא׃
דעריבער האָבן אין יענער צײַט גענענט מענער, כַּשׂדים, און האָבן געמַסרט אױף די ייִדן.
Rashi
In view of this in view of this, that their enemies saw that there is a time to denounce them.
Ibn Ezra
[Daniel 3:8] To slander [lit. And they ate their pieces] (וַאֲכַלוּ קַרְצֵיהוֹן - va'akhalu kartzeihon): Targum [Onkelos translates the prohibition] “You shall not go about as a talebearer (rakhil)” [Leviticus 19:16] [using this very idiom]: “Do not eat fragments (kurtzin) among your people” (לָא תֵיכוּל קוּרְצִין בְּעַמָּךְ) [Onkelos Leviticus 19:16]. [Ibn Ezra elaborates on the meaning of this idiom:] This refers to the one who speaks evil (raʿah) about another in secret, as if he were eating his flesh (k'ilu okhel besaro).
Rashi
some Chaldean men approached and denounced Aram. וַאֲכַלוּ קַרְצֵיהוֹן informed about them. (Lev. 19: 16) “Do not go as a talebearer among your people,” is translated by Targum as קוּרצִין לָא תֵיכוּ I say that it was the custom of talebearers to eat a meal in the place where they informed, and that was a sign of the verification of their words; for at that time it was incumbent upon them to clarify their words and to verify the slander that they spoke, and that meal was called eating קוּרצִין, an expression of (Prov. 6:13) “he winks (קוֹרֵץ) with his eyes,” which is a sign of slander.