jbaldy22:
The Sefer Hachinuch is the only rishon that I know of (there could be rishonim that I haven’t seen) that extends Lo Tasur to every generation. The Chofetz Chaim in Sefer Hamitzvos Hakatzar quotes the Sefer Hachinuch. Even regarding the Sanhedrin itself, see the Torah Temima that if you think you are right you still have to listen, but if you are 100% sure that you are right than you don’t listen. He quotes the Ramban which seems to say that you do have to listen and he says that that is ??? ????? ???? ??? ??? and then reconciles the Ramban. There aren’t going to be too many mareh mekomos from Talmudic/Rishonic sources that are anything more than roundabout. In the past century or so there are several sources. See my forthcoming posts.