יְשַׁלַּ֣ח יְהוָ֣ה ׀ בְּ֠ךָ אֶת־הַמְּאֵרָ֤ה אֶת־הַמְּהוּמָה֙ וְאֶת־הַמִּגְעֶ֔רֶת בְּכָל־מִשְׁלַ֥ח יָדְךָ֖ אֲשֶׁ֣ר תַּעֲשֶׂ֑ה עַ֣ד הִשָּֽׁמֶדְךָ֤ וְעַד־אֲבָדְךָ֙ מַהֵ֔ר מִפְּנֵ֛י רֹ֥עַ מַֽעֲלָלֶ֖יךָ אֲשֶׁ֥ר עֲזַבְתָּֽנִי׃
The LORD will send upon thee cursing, discomfiture, and rebuke, in all that thou puttest thy hand unto to do, until thou be destroyed, and until thou perish quickly; because of the evil of thy doings, whereby thou hast forsaken Me.
Find Mishnaic references to Deuteronomy 28:20: , passages from the 63 tractates of the Mishnah.