[Warning against Satan :] Therefore, you should fear lest the enemy of Allāh (Satan) infects you with his disease, or ‘leads you astray through his call, or marches on you with his horsemen and footmen’, (ref. 17:64) because, by my life, he has put the menacing arrow in the bow for you, has stretched the bow strongly, and has aimed at you from a nearby position, and: “He (Satan) said: My Lord! Because Thou hast left me to stray, certainly will I adorn unto them the path of error, and certainly will I cause them all to go astray.” (Qur’ān, 15:39)