@elbanditoroso Mark didn’t say it, Jesus did. And let’s put it into context. The Pharisees were attacking Jesus because his disciples were eating food without washing their hands first. Washing hands was a tradition of the elders, not a commandment of God. Jesus pointed out to them their hypocrisy and how they had left the teachings of God and adopted the rules of Man. He told the crowd that nothing outside of them can defile them by going into them, it is what comes out of them that defiles. This was a parable. He explained it better to his disciples shortly after this:
“17 After he had left the crowd and entered the house, his disciples asked him about this parable. 18 “Are you so dull?” he asked. “Don’t you see that nothing that enters a person from the outside can defile them? 19 For it doesn’t go into their heart but into their stomach, and then out of the body.” (In saying this, Jesus declared all foods clean.)
20 He went on: “What comes out of a person is what defiles them. 21 For it is from within, out of a person’s heart, that evil thoughts come—sexual immorality, theft, murder, 22 adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. 23 All these evils come from inside and defile a person.”
And yes, he is saying the dietary laws were no longer applicable.