Say, "The soul is of the affair [i.e., concern] of my Lord. And you [i.e., mankind] have not been given of knowledge except a little."

     And from [part of] the night, pray with it [i.e., recitation of the Qur'an] as additional [worship] for you; it is expected that your Lord will resurrect you to a praised station. And say, "My Lord, cause me to enter a sound entrance and  to exit a sound exit and grant me from Yourself a supporting authority." And say, "Truth has come, and falsehood has departed. Indeed is falsehood, [by nature], ever bound to depart." And We send down of the Qur'an that which is healing and mercy for the believers, but it does not increase the wrongdoers except in loss. And when We bestow favor upon man [i.e., the disbeliever], he turns away and distances himself; and when evil touches him, he is ever despairing. Say, "Each works according to his manner, but your Lord is most knowing of who is best guided in way." And they ask you, [O Muhammad], about the soul. Say, "The soul is of the affair [i.e., concern] of my Lord. And you [i.e., mankind] have not been given of knowledge except a little." And if We willed, We could surely do away with that which We revealed to you. Then you would not find for yourself concerning it an advocate against Us.

THE QUR'AN al-Isra 17:79-86