The story of Adam and Iblis
Adam, peace be upon Him, is the origin of mankind, and Iblis is the origin of the Jinn. Allah has created Adam from clay and created Iblis from fire, as Aisha narrated that Allah's Messenger (PBUH) said: "The Angels were created of light, and the Jinn were created of the spark of fire, and Adam was created from what was described for you i.e. of clay" (Sahih Muslim 2996). When Allah created Adam, He commanded the Angels to prostrate before him, and they all prostrated except for Iblis. Although Iblis was one of the Jinn as Allah has stated in Aya (50) of Surat Alkahf, and the command to prostrate before Adam was specifically for the Angels, but it included Iblis because he was with them and used to imitate their behavior and worship Allah as they did, so when the Angels were commanded to prostate before Adam and show their respect for him, Iblis must adhere to the same command without being specifically addressed to it.
The story of prostration before Adam is mentioned seven times in the Holy Quran, namely in Surat Albaqarah Aya (34), Surat Ala'raf Aya (11), Surat Alhijr Ayat (28-31), Surat Alisraa Aya (61), Surat Alkahf Aya (50) Surat Ta Ha Aya (116), and Surat Sad Ayat (71-74), and in all of them, Iblis refused to prostrate before Adam, and rebelled against Allah's command.
When Allah asked Iblis about what prevented him from prostrating to Adam when He commanded him to do so, Iblis said I would not prostrate to a human being whom You have created from dry clay from a wet mud as mentioned in Ayat (32,33) of Surat Alhijr, and Iblis showed arrogance and claimed that he is better than Adam; because he was created from fire and Adam was created from clay, and the fire is better than the clay in his claim for it burns the clay as Allah says in Aya (12) of Surat Ala'raf {He said What prevented you that you did not prostrate when I commanded you?, he said I am better than him, You created me from fire and created him from clay}. Thereupon, Allah expelled Iblis from Paradise and commanded him to descend from it for it is not for him to be arrogant in Paradise, disdaining the command of his Lord as mentioned in Aya (13) of Surat Ala'raf {He said Go down from it, for it is not for you to be arrogant therein, so Get out, indeed, you are of the despised}.
Iblis asked Allah not to die, and to delay him until the day all creation will be resurrected, so Allah delayed Him until the day of resurrection, and Iblis promised Allah that he will tempt and mislead the Children of Adam just as he himself had been among the misguided, thereupon, Allah promised him that He will fill Hellfire on the day of resurrection with him and whoever follows him from among the children of Adam.
Thus Iblis became of the disbelievers when he rebelled against Allah's command, and he will be among the companions of Hellfire on the day of resurrection, and the Messenger of Allah (PBUH) said in narration of Abu Hurayrah: "When the son of Adam recites the verses of prostration (Sajdah), and then falls down in prostration, Satan goes into seclusion and weeps saying Alas, and in narration of Abu Kuraib, he says woe unto me, the son of Adam was commanded to prostrate, and he prostrated, and Paradise was entitled to him, and I was commanded to prostrate, but I refused and am doomed to Hell" (Sahih Muslim 81).