The champions of sola Scriptura in ancient Judaism were the Sadducees, who rejected the Prophets and the Writings as "apocrypha" and for whose authority Jesus had nothing kind to say.
Irving's Law is sort-of-invoked - not sure how it applies since wideawake is taking the Pharisees' side, though!
I'm not taking the Pharisees' side.
I'm pointing out that Jesus accepted the Pharisees' authority as authentic while criticizing their behavior, yet He rejected the Sadduccees teaching as outright heretical.