לְבִלְתִּ֤י רוּם־לְבָבוֹ֙ מֵֽאֶחָ֔יו וּלְבִלְתִּ֛י ס֥וּר מִן־הַמִּצְוָ֖ה יָמִ֣ין וּשְׂמֹ֑אול לְמַעַן֩ יַאֲרִ֨יךְ יָמִ֧ים עַל־מַמְלַכְתּ֛וֹ ה֥וּא וּבָנָ֖יו בְּקֶ֥רֶב יִשְׂרָאֵֽל׃ (ס)
that his heart be not lifted up above his brethren, and that he turn not aside from the commandment, to the right hand, or to the left; to the end that he may prolong his days in his kingdom, he and his children, in the midst of Israel.
Find Mishnaic references to Deuteronomy 17:20: , passages from the 63 tractates of the Mishnah.