Ruling on sitting with Sufi orders making Dhikr while swaying

A: It is well known about all Sufi orders and sects that they mention Allah through Bid`ah (innovation in religion). They mention, dance, sway and totter right and left, up and down. They call Allah during their Dhikr (Remembrance of Allah) with names unlike the names He set for Himself or set by the Prophet (peace be upon him) such as "He, He, He", "Ah, Ah" or mention Him by name such as "Allah, Allah, Allah, Allah". They call Him by "Mentioning by the heart" like the Naqshabandi Order does. They mention Him in congregation in one voice, call the dead and the absent saying: "Give us help, O Abu Al-`Abbas", "give us help, O Dusuqy". These are acts of Shirk (associating others with Allah in His Divinity or worship) which take a person out of Islam. They also believe that their Shaykhs have hidden knowledge through which they know the Ghayb (Unseen). They have secrets by which they act beyond the regular causes. We advise you to read the book entitled "This is Sufism" by Shaykh `Abdul-Rahman (Part No. 2; Page No. 304) Al-Wakil to know more about their Bid`ahs and sit with the people whom you know that they hold firm to the Qur'an, the Sunnah and those who reject Bid`ah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.