Reference for Pirkei Avot 3:5

רַבִּי נְחוּנְיָא בֶּן הַקָּנֶה אוֹמֵר, כָּל הַמְקַבֵּל עָלָיו עֹל תּוֹרָה, מַעֲבִירִין מִמֶּנּוּ עֹל מַלְכוּת וְעֹל דֶּרֶךְ אֶרֶץ. וְכָל הַפּוֹרֵק מִמֶּנּוּ עֹל תּוֹרָה, נוֹתְנִין עָלָיו עֹל מַלְכוּת וְעֹל דֶּרֶךְ אֶרֶץ:

R. Nechunia ben Hakanah says: If one accepts upon himself the yoke of Torah, there is removed from him the yoke of sovereignty [the burden of the king and his officers] and the yoke of derech eretz [the toil and tribulation of earning a livelihood (for his work is blessed)]. And if one divests himself of the yoke of Torah [i.e., if he says: "The yoke of Torah is too burdensome for me and I cannot bear it,"] there is placed upon him the yoke of sovereignty and the yoke of derech eretz.

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