וּבָאתָ֗ אֶל־הַכֹּהֲנִים֙ הַלְוִיִּ֔ם וְאֶל־הַשֹּׁפֵ֔ט אֲשֶׁ֥ר יִהְיֶ֖ה בַּיָּמִ֣ים הָהֵ֑ם וְדָרַשְׁתָּ֙ וְהִגִּ֣ידוּ לְךָ֔ אֵ֖ת דְּבַ֥ר הַמִּשְׁפָּֽט׃
tu iras trouver les pontifes, descendants de Lévi, ou le juge qui siégera à cette époque; tu les consulteras, et ils t’éclaireront sur le jugement à prononcer.
Rashi on Deuteronomy
הכהנים הלוים [AND THOU SHALT COME UNTO] THE PRIESTS THE LEVITES — i.e. unto the priests, who descend from of the tribe of Levi.
Or HaChaim on Deuteronomy
ודרשת והגידו לך, "and you shall enquire and they will tell you, etc." It is up to you to make these enquiries, i.e. to find out (from the Supreme Court) why the judges ruled as they did. On the other hand, the judges of the Supreme Court are obligated to explain their ruling to you once you ask them. If you did not ask for the Supreme Court to tell you their reasons they are not under any obligation to volunteer it.