Adam's disobedience and Iblis

God told the angels He would create humankind and knew what they would not, and commanded them to prostrate to Adam; they all prostrated except Iblis, who said 'I am better than him; You created me from fire and created him from clay' al-Baqarah 30 al-A'raf 11.

God said to Iblis 'what prevented you from prostrating to what I created with My hands?' and he said 'I am better than him'; he swore by His might to mislead Adam and all his descendants, and was expelled and cursed, having no power over anyone but those He chose; God said to him 'descend from it; it is not for you to be arrogant in it' al-A'raf 12 al-Hijr 32.

Then Satan whispered to the two of them and removed them from the tree, and their nakedness appeared to them; he said 'your Lord only forbade you this tree lest you become angels or become immortal', and they called on their Lord 'our Lord, we have wronged ourselves; if You do not forgive us and have mercy on us, we will surely be among the losers' al-A'raf 20 Ta Ha 121.

In surah Ta Ha Iblis swears by the truth that he will mislead many generations, and God says 'upon you is the curse until the Day of Requital' Ta Ha 115 Ta Ha 123; this incident is the root of every devil story in this browser ¹.