There is a slaughter-house in which some
of the people who work there pray, and some do not. Most of the people who work there
slander the religion of Islam. Is it permissible to eat the meat they slaughter?
Praise be to Allaah.
It is not permissible to approve of those who slander
the religion in this slaughter-house, even if they pray, because slandering the religion
is kufr which puts a person beyond the pale of Islam. As for those who do not pray, they
should not be left to do this job if they deny that it is obligatory, or they persist in
not praying, or if they do not pray even at home. It is not permissible to eat the meat
slaughtered by these people, even if they call themselves Muslims and mention the name of
Allaah when they slaughter the meat. You should not keep quiet about them if they are in a
Muslim country where the laws of sharee’ah are applied. If you cannot get them thrown
out from this kind of work, then you have to warn the Muslims against eating meat
slaughtered by them. And Allaah knows best.
Al-Lu’lu’ al-Makeen min Fataawaa Fadeelat al-Shaykh ibn Jibreen, p. 55