Leading others in Salah while adopting beliefs entailing Shirk

Q: I live in a social care center and I suffer paralysis that forces me to offer Salah (Prayer) on a wheelchair. There is a Masjid (mosque) in the center but those who lead the Salah are people who adopt Sufi beliefs, such as believing in the ability of the dead to harm and benefit, etc. We fear that their beliefs might be tantamount to Shirk (associating others with Allah in His Divinity or worship). However, there is no one to act as an Imam (the one who leads congregational Salah) except such people. Is it permissible to offer Salah behind them? If not, is it permissible for a disabled person who uses a wheelchair and wears a urine bag, because he cannot control his urination, to lead the Salah? The Ma'mums (persons being led by an Imam in Prayer) would also be disabled people, a group of the Indians who cannot recite the Qur'an well, and a group of Sufis. Please advise in detail.

A: If you are certain that those who lead the Salah adopt beliefs entailing Shirk, such as supplicating to people other than Allah or beseeching someone other than Allah, it is not permissible to offer Salah behind them. In this case, you are required to offer congregational Salah led by an Imam who should be the best amongst you in terms of reciting the Qur'an and completing the pillars of Salah as much as he can. Allah (Exalted be He) says: So keep your duty to Allâh and fear Him as much as you can The Prophet (peace be upon him) said to a sick person: Offer Salah while standing; if you cannot do this, offer it while sitting; if you cannot do this, offer it while lying on your side; and if you cannot even do that, then offer Salah while lying on your back. If the people who sometimes act as Imams adopt no beliefs entailing Shirk, but they only (Part No. 6; Page No. 290) commit some Bid`ahs (innovations in religion), it is valid to offer Salah behind them until a more qualified Imam leads the Salah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.