Al-La (this word has two interpretations) (A) [As Shaitan (Satan) has barred them from Allah's Way] so that they do not worship (prostrate before) Allah, or (B) So that they may worship (prostrate before) Allah, Who brings to light what is hidden in the heavens and the earth, and knows what you conceal and what you reveal. [Tafsir At-Tabari, Vol. 19, Page 149]