The frozen slaughtered animals sold in markets in countries where Shirk prevails

A 2: If the reality is as you mentioned in the question, that the Muslim slaughterer follows a sect that permits seeking help from other than Allah in matters that only Allah is Able to fulfill, and seeks help from dead prophets and a Wali (pious person), the animal they slaughter takes the ruling of animals slaughtered by a Mushrik (one who associates others with Allah in His Divinity or worship) who worships idols such as Al-Lat, (Part No. 22; Page No. 432) Al-`Uzza, Manat, Wad, Suwa`, Yaghuth, Ya`uq and Nasr. It is not permissible for a true Muslim to eat from this animal because it is considered Maytah (carrion). The status of that slaughterer is more heinous than that of idol worshippers and Mushriks because they are Murtad (apostate) who forsook Islam by resorting to other than Allah in matters that are sought only from Allah, such as guiding the misguided, curing the sick and the like. Followers of similar sects falsely attribute these acts to supernatural causes, including secrets and blessings of the dead and absent people whom ignorant people invoke believing that they possess certain blessings and unique powers which enable them to hear the invocations of whoever calls them to alleviate harm or bring about benefit no matter how far away they are. It is the duty of Ahl-ul-Sunnah (those adhering to the Sunnah) to advise and instruct people regarding pure Tawhid (belief in the Oneness of Allah). If they respond positively, praise be to Allah; if they do not respond after educating them beyond any doubt, they will not be excused.If the religious status of the slaughterer is not known, but most of the Muslims in this land usually seek relief from the dead and supplicate to them, the animal they slaughter takes the common rule, i.e. it is not permissible to eat from it. Q 3: What is the ruling on the Imam (the one who leads congregational Prayer) who eats from these slaughtered animals; is it permissible to perform Salah (prayer) behind him? (Part No. 22; Page No. 433)  A 3: If the Imam eats from these animals after educating him and establishing the proof against his belief that it is lawful, it will not be permissible to perform Salah behind him because he considers the flesh of the dead animal that Allah prohibits to be lawful. If he persists after educating him and establishing the proof against his belief that it is unlawful, he is to be considered a Fasiq (someone flagrantly violating Islamic law).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.