The ruling on one who eats pork without knowing it

Question:
I seek help, O Shaykh, may you love Allah. A man was abroad and ate pork, but he did not know it was pork until after he had eaten it. Is there anything required of him?

Answer:
If it was something he did intentionally without knowing, then he owes nothing. Allah the Exalted said: "And there is no blame upon you for what you have eaten unintentionally" , and He said, Glorified and Exalted is He: . And Allah the Exalted said: "I have done it" . So, the one who eats something forbidden without knowing it has done nothing wrong. However, if he vomits it up out of scrupulousness, as Abu Bakr (may Allah be pleased with him) did when he ate food brought to him by his slave, who then informed him that he had taken it as wages for practicing divination in the pre-Islamic age of ignorance, though he was not skilled at divination. Abu Bakr (may Allah be pleased with him) put his fingers in his throat and expelled the food, saying, "If my soul were to go out with it, I would let it go." This is a matter of scrupulousness. Allah knows best.
So if he vomits it up out of scrupulousness, that is good. As for the aspect of prohibition and sin, he owes nothing because he did not intend it. Yes.