לֹ֣א תֹאכְל֣וּ כָל־נְ֠בֵלָה לַגֵּ֨ר אֲשֶׁר־בִּשְׁעָרֶ֜יךָ תִּתְּנֶ֣נָּה וַאֲכָלָ֗הּ א֤וֹ מָכֹר֙ לְנָכְרִ֔י כִּ֣י עַ֤ם קָדוֹשׁ֙ אַתָּ֔ה לַיהוָ֖ה אֱלֹהֶ֑יךָ לֹֽא־תְבַשֵּׁ֥ל גְּדִ֖י בַּחֲלֵ֥ב אִמּֽוֹ׃ (פ)
Ihr sollt nichts essen, was von selbst stirbt; du darfst es dem Fremden geben, der in deinen Toren ist, damit er es isst; oder du kannst es an einen Ausländer verkaufen; denn du bist ein heiliges Volk für den HERRN, deinen Gott. Du sollst kein Kind in seiner Mutter sehen's Milch.
Mishnah Demai
The [second tithe of] demai is not subject to [the rules of adding a] fifth. It has no mandated time of removal. It may be eaten by an onen. It may be brought into Jerusalem and taken out again. They may allow a small amount to be lost on the road. One may give it to an am haaretz and consume its equivalent in Jerusalem. [Second tithe money of demai] may be redeemed silver [coins] for [other] silver [coins], copper [coins] for [other] copper [coins], silver for copper, and copper for produce, provided that the produce is again redeemed for money, the words of Rabbi Meir. But the sages say: the produce itself must be brought up and eaten in Jerusalem.