 This prohibition is further expanded upon in kabbalistic literature.The halakhic prohibition applies to shaving off the "pe'ot" (sidelocks) and "corners of the beard" by means of a razor.The book of Leviticus in the Torah makes mention of "corners of the head", and prohibits the "marring" of the "corners of the beard", with particular emphasis on priests not "marring" the "corners of the beard"; as with many other parts of Leviticus, the Book of Ezekiel describes different regulations, stating that the priests should not shave their heads, or let their locks grow long.