The Law from the perspective of anyone but those practicing “Pharisaical Judaism” can only be the written Torah, but even that breaks down into the parts that affect everyone, and those that affect the various sub groups of Hebrews, and then there are also the covenant issues like circuncision.
The “oral Torah” is no more valid than the catholic “traditions.”
do you realize, and you will if you think for just a moment, that for the majority of time until the modern ages, all religion was taught and learned verbally....who had books, who could read them, where were they stored and who had access to them, virtually noone could afford the books that existed so the verbal word anf traditions paid a MAJOR part in the growth of Christianity.