Allah said: {...The food (ṭaʿām) of the People of the Book is lawful for you and your food is lawful for them} [al-Mā'idah: 5]. This is because they mention the name of Allah , the Exalted, upon it, as in Sharḥ al-Wiqāyah, p. 845. The intended meaning by the People of the Book is the Jews and Christians who believe in their fundamental beliefs, even if they also believe in false beliefs like the Trinity and atonement. As for those who do not believe in Allah or Messengers or the divine books, they are naturalists, and do not have the same ruling as the People of the Book, even if their name is registered as a Christian or a Jew.Meat whose slaughterer is unknown in Muslim lands is assumed to have been slaughtered according to the Sharīʾah (Islamic law), and it is permissible to eat it, unless it is proven that the slaughterer did not slaughter it according to the Sharīʾah. The evidence for this is the ḥadīth of ʿĀʾishah regarding the slaughters of the Bedouins.Meat sold in the markets of the People of the Book is considered from the slaughters of the People of the Book, unless it is proven that the slaughterer is someone else.Christians today have abandoned the obligation of religious rulings in the matter of slaughtering and have left the laws of their religion. They do not adhere to the prescribed methods, so their slaughters today are not permissible unless it is proven in a specific piece of meat that it was slaughtered by a Christian according to the prescribed method. Therefore, meat sold in their markets whose slaughterer is unknown is not permissible.Imported meat from non-Muslim countries is not permissible to eat, even if it has a certification that it was slaughtered according to the Islamic method. It has been established that these certifications are not reliable, and the normative principle in meat is prohibition. See: Buḥūth fī Qaḍāyā Fiqhiyyah Muʿāṣirah, p. 443-444, and Aḥkām al-Dhabāʾiḥ, p. 102-104.