It is not permissible to pray behind one who is like this, and if one who knows that the belief of the imam is like that prays behind him, his prayer is invalid, because most of the things listed are characteristics of kufr (disbelief) and bid‘ah (innovation) that are contrary to the Tawheed (affirmation of the Oneness of Allah) with which Allah sent His Messengers and which He revealed in His Books. It is contrary to the clear meaning of the Qur’an, such as the verses in which Allah, may He be exalted, says (interpretation of the meaning): “Verily, you (O Muhammad ) will die and verily, they (too) will die” [az-Zumar 39:30] and “And the mosques are for Allah (Alone), so invoke not anyone along with Allah” [al-Jinn 72:18]. The innovations that they do should be denounced in a gentle way; if they accept it then praise be to Allah. If they do not accept it, then shun them and pray in the mosques of Ahl as-Sunnah. We have a good example in the Close Friend (Khaleel) of the Most Merciful, as Allah tells us he said (interpretation of the meaning): “And I shall turn away from you and from those whom you invoke besides Allah. And I shall call on my Lord; and I hope that I shall not be unblest in my invocation to my Lord” [Maryam 19:48].