Musar do Powtórzonego Prawa 27:16

And [there is also a curse] about the nullification of the fear of the father and the mother, which is a positive commandment - as it is stated (Deuteronomy 27:16), “Cursed be he who belittles his father or mother.” The content of belittling is to disparage their honor and abrogate fearing them. As our Rabbis, may their memory be blessed, said (Kiddushin 31b), ‘A man must fear his mother and father’ (Leviticus 19:3) - what is fear of the father? Not to sit in his place, not to contradict his words or determine [an argument] for him.