Mark 7:17-19

Young's Literal Translation

¹⁷ And when he entered into a house from the multitude, his disciples were questioning him about the simile,

¹⁸ and he saith to them, `So also ye are without understanding! Do ye not perceive that nothing from without entering into the man is able to defile him?

¹⁹ because it doth not enter into his heart, but into the belly, and into the drain it doth go out, purifying all the meats.'