עַל־פִּ֨י הַתּוֹרָ֜ה אֲשֶׁ֣ר יוֹר֗וּךָ וְעַל־הַמִּשְׁפָּ֛ט אֲשֶׁר־יֹאמְר֥וּ לְךָ֖ תַּעֲשֶׂ֑ה לֹ֣א תָס֗וּר מִן־הַדָּבָ֛ר אֲשֶׁר־יַגִּ֥ידֽוּ לְךָ֖ יָמִ֥ין וּשְׂמֹֽאל׃
You shall act in accordance with the instructions given you and the ruling handed down to you; you must not deviate from the verdict that they announce to you either to the right or to the left.
Torah Temimah points to Sanhedrin / Sifrei.
לא תסור. מכאן סמכו חז״ל מצות שמעון לדברי חכמים.
English: You shall not turn aside — from here the Sages supported the commandment to listen to the words of the Sages.
The verse is the primary scriptural anchor for the authority of the Oral Law and the Sages.
Derash on the verse (Bavli / Sifrei) — not a formal named middah of the 13.
The Torah itself commands obedience to the interpretive rulings of the authorized sages.