Imaam Maalik [rahimahullaah]:

O, would that I knew! By way of which intellect should the [evidences in the] Qur’aan and Sunnah be determined? Is it that whenever a man who can argue better than another man comes to us we take his statement and abandon the Qur’aan and the Sunnah because of him? [i.e. abandon what is already established by way of sound and unambiguous proofs and take the statement of that person]