Shkoyach. Is rabbeinu bachyah paskening like Abaye in nedarim 10a, against rebbi elazar hakafar who holds that the nazir is a choteh, because “shetzier atzmo min hayayin?” as the rambam writes in deios ch. 3, a person actually can’t assur extra things on himself that Torah didnt assur: ???? ????? ??? ???? ??? ???? ??? ?????? ????? ????? ????. There’s also that Yerushalmi that a person is going to give din vecheshbon al kol mah sheraasah eino velo achal.
Is this a long-running contradiction that goes through the amoraim and rishonim, or is there a way to resolve it?