Tosefta for Proverbs 25:6

אַל־תִּתְהַדַּ֥ר לִפְנֵי־מֶ֑לֶךְ וּבִמְק֥וֹם גְּ֝דֹלִ֗ים אַֽל־תַּעֲמֹֽד׃

Glorify not thyself in the presence of the king, and stand not in the place of great men;