They are from of associating partners with Allah (Glorified and Exalted be He) in worship, though worship is due to Allah Alone. He (Exalted be He) says, And they were commanded not, but that they should worship Allâh, and worship none but Him Alone (abstaining from ascribing partners to Him) He (Glorified be He) also says, So worship Allâh (Alone) by doing religious deeds sincerely for Allâh's sake only. Surely the religion (i.e. the worship and the obedience) is for Allâh only. Besides,
the Prophet (peace be upon him) said in the Hadith reportedin the Two Sahih (authentic) Books of Hadith (i.e. AlBukhary and Muslim)from Mu`adh ibn Jabal (may Allah be pleased with him), The right of Allah over His slaves is that they should worship Him and not associate anything with Him.
It is an obligation on Muslim scholars to spread the religion of Allah and explain to the followers of innovations, Sufism, superstitions, and deviations showing the invalidity of the innovations that they adopt, illustrating the Honorable Sunnah and the clearcut, tolerant way, demonstrating to them the evidence from the Qur'an and the Sunnah, and warning them against their mistakes in a liberal manner using the clear proof, conclusive evidence, irrefutable argument and unequivocal style without violence or harshness. Rather, they should address them in lucid expressions and argue in a way that is better so that they could consider the matter carefully and discard superstitions, polytheistic actions, and innovations which they follow without guidance or insight. Indeed, truth is the longsought objective of the believer, which whenever he finds it he should assume it. Allah (Exalted be He) says, And say: "Truth (i.e. Islâmic Monotheism or this Qur'ân or Jihâd against polytheists) has come and Bâtil (falsehood, i.e. Satan or polytheism) has vanished. Surely Bâtil is ever bound to vanish." The Prophet (peace be upon him) said, He who did any act for which there is no sanction on our behalf, that is to be rejected.