Talmud zu Dewarim 4:2
לֹ֣א תֹסִ֗פוּ עַל־הַדָּבָר֙ אֲשֶׁ֤ר אָנֹכִי֙ מְצַוֶּ֣ה אֶתְכֶ֔ם וְלֹ֥א תִגְרְע֖וּ מִמֶּ֑נּוּ לִשְׁמֹ֗ר אֶת־מִצְוֺת֙ יְהוָ֣ה אֱלֹֽהֵיכֶ֔ם אֲשֶׁ֥ר אָנֹכִ֖י מְצַוֶּ֥ה אֶתְכֶֽם׃
Ihr sollt dem Wort, das ich euch gebiete, nicht hinzufügen und nicht davon abnehmen, damit ihr die Gebote des HERRN, eures Gottes, hält, die ich euch gebiete.
Jerusalem Talmud Pesachim
As we have stated there78MishnahZevaḥim 8:10.: “[Blood] to be given in one batch etc. Rebbi Eliezer said to him, would you not transgress do not diminish? Rebbi Joshua answered him, would you not transgress do not add?79Deut. 4:2,13:1.” He said to him, it is better to violate a prohibition that was not caused by me than a prohibition which will come before me.]
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