سُبْحَانَ ٱللَّٰهِ
Holy Qur'an
Al-Qur'an
Kids Qur'an
I.e., "since they are but created beings, and not co-existent with Me, how can you take them for your masters?"-an allusion to the beings, real or imaginary, to which men ascribe divine qualities, either consciously or (as in the case of one's submission to the "whisperings of Satan") by subconscious implication.
Since God is almighty, all-knowing and self-sufficient, the belief that any being or power could have a "helping" share in His divinity, or could "mediate" between Him and man, causes the latter to go utterly astray.
Allah wants man's good: how can He take Evil for His partner?