Halakhah zu Dewarim 17:10

To listen to the voice of the court at all times: To listen to the voice of the Great Court and to do all that they command us in the paths of the Torah - regarding the forbidden and the permitted, the impure and the pure, the liable and the exempt and in everything that appears to them to be a reinforcement and enhancement to our religion. And about this is it stated (Deuteronomy 17:10), "And you shall act according to the word that they tell you." And it is repeated adjacently (Deuteronomy 17:12) to strengthen the thing, "According to the instruction that they instruct you and to the judgement that they say to you shall you act." And there is no difference in this, whether the thing that they see is from their own intellects or is something that they extracted by one of the comparisons through which the Torah is expounded, or something that they agreed is from the secrets of the Torah or they see that the thing is like this in any other way - in everything, we are obligated to listen to them. And the proof that this is from the tally of positive commandments is their, may their memory be blessed, saying in Sifrei Devarim 154, "'And according to the judgement that they say to you shall you act' - this is a positive commandment."