כָּל־נְבֵלָה֙ וּטְרֵפָ֔ה מִן־הָע֖וֹף וּמִן־הַבְּהֵמָ֑ה לֹ֥א יֹאכְל֖וּ הַכֹּהֲנִֽים׃ (פ)
The priests shall not eat of any thing that dieth of itself, or is torn, whether it be fowl or beast.
Read midrashic interpretation of Ezekiel 44:31: and classical rabbinic exegesis.