Requirements for classify that food is halal or not are the ingredients and place where they cook. You can even eat a non-Muslim cook food as long as the 2 requirements above are met for halal. There's no such thing as u cannot eat their cook food based on their believe.

It doesn't matter who's cooking; it matters what's being cooked.

how can u sure that shiah is really non muslim? what are requirements of becoming muslim that shiah doesnt follow? i dont want to drag this off-topic argument.. take it somewhere else.. and like i said, its about what are being cook and slaughtered chicken falls under what being cook.. not who is cooking it.. u can even eat slaughtered chicken from christians and jews.. y not shiahs?


"This day are (all) things good and pure made lawful unto you. The food of the People of the Book is lawful unto you and yours is lawful unto them. (Lawful unto you in marriage) are (not only) chaste women who are believers, but chaste women among the People of the Book, revealed before your time― when ye give them their due dowers, and desire chastity, not lewdness, nor secret intrigues. If anyone rejects faith, fruitless is his work, and in the Hereafter he will be in the ranks of those who have lost (all spiritual good). (5)" - QS 5:5