Mattityahu 15:9-11

Orthodox Jewish Bible

⁹ and in vain do they worship me, teaching as doctrines the mitzvot of [mere] men, YESHAYAH 29:13.)

¹⁰ And having summoned the multitude, Rebbe, Melech HaMoshiach said to them, Listen and understand!

¹¹ It is not the thing entering into the mouth that makes the man tameh (unclean), but the thing going out from the mouth this makes the man tameh.