21. O you who believe! Follow not the footsteps of Shaitân (Satan). And whosoever follows the footsteps of Shaitân (Satan), then, verily he commands Al-Fahshâ’ [i.e. to commit indecency (illegal sexual intercourse)], and Al-Munkar [disbelief and polytheism (i.e. to do evil and wicked deeds; and to speak or to do what is forbidden in Islâm)]. And had it not been for the Grace of Allâh and His Mercy on you, not one of you would ever have been pure from sins. But Allâh purifies (guides to Islâm) whom He wills, and Allâh is All-Hearer, All-Knower.