In the name of allah, the Beneficent, the Merciful What is sin in Islam?

GETTING TO THE MEAT OF THE MATTER

To answer the question as to whether the meat sold in the markets or served in restaurants is lawful for Muslims to consume, one needs to carefully look at two points:
1. Who has slaughtered the animal (the slaughterer)?

2. How was the animal slaughtered (the slaughtering procedure)?
In the following discussion, we exclude the case when the slaughterer is a Muslim, who has followed the Islamic slaughtering procedure, for it is then clear that the meat is Halal for Muslims to consume.
THE SLAUGHTERER

The slaughterer must be from the People of the Book (i.e. a Christian or a Jew). Animals slaughtered of other religions or people with no religion at all are not lawful for Muslims to consume. Hence, for the meat sold in a Non-Muslim market, one should find out whether the religion of the slaughterer is either Christianity or Judaism.