But 'the' Scholars have said

As much as some may behave to the contrary, there is no priestly or rabbinical order that is textually sanctioned in Islam.  The Qur’ānic text is replete with examples of censure given to the previous nations that descended into an abyss through their scholarship [e.g. 5: 44, 63; 9: 31, 34].  Whether that was altering the rulings for a miserly price, to taking the diktats of the priestly order above