Allaah says (interpretation of the meaning):
"(Remember) when your Lord said to the angels: 'Truly, I am going to create man from clay. So when I have fashioned him and breathed into him (his) soul created by Me, then you fall down prostrate to him.' So the angels prostrated themselves, all of them, Except Iblees (Satan), he was proud and was one of the disbelievers. (Allaah) said: 'O Iblees (Satan)! What prevents you from prostrating yourself to one whom I have created with Both My Hands. Are you too proud (to fall prostrate to Adam) or are you one of the high exalted?' [Iblees (Satan)] said: 'I am better than he. You created me from fire, and You created him from clay.' (Allaah) said: "Then get out from here; for verily, you are outcast. And verily, My Curse is on you till the Day of Recompense.' [Iblees (Satan)] said: "'y Lord! Give me then respite till the Day the (dead) are resurrected.' (Allaah) said: 'Verily, you are of those allowed respite Till the Day of the time appointed.' [Iblees (Satan)] said: 'By Your Might, then I will surely, mislead them all, Except Your chosen slaves amongst them (i.e. faithful, obedient, true believers of Islamic Monotheism).' (Allaah) said: 'The truth is - and the truth I say * That I will fill Hell with you [Iblees (Satan)] and those of them (mankind) that follow you, together.'" [Saad 38:71-85]
“And surely, We created you (your father Adam) and then gave you shape (the noble shape of a human being); then We told the angels, ‘Prostrate yourselves to Adam’, and they prostrated themselves, except Iblees (Satan), he refused to be of those who prostrated themselves.
(Allaah) said: ‘What prevented you (O Iblees) that you did not prostrate yourself, when I commanded you?’ Iblees said: ‘I am better than him (Adam), You created me from fire, and him You created from clay.’
(Allaah) said: ‘(O Iblees) get down from this (Paradise), it is not for you to be arrogant here. Get out, for you are of those humiliated and disgraced.’
(Iblees) said: ‘Allow me respite till the Day they are raised up (i.e. the Day of Resurrection).’
(Allaah) said: ‘You are of those respited.’
(Iblees) said: ‘Because You have sent me astray, surely, I will sit in wait against them (human beings) on Your straight path.
Then I will come to them from before them and behind them, from their right and from their left, and You will not find most of them as thankful ones (i.e. they will not be dutiful to You).’
(Allaah) said (to Iblees): ‘Get out from this (Paradise), disgraced and expelled. Whoever of them (mankind) will follow you, then surely, I will fill Hell with you all.’”
[al-A’raaf 7:11-18]
Iblees may Allaah curse him disobeyed his Lord and refused, stubbornly and arrogantly, to prostrate to Adam. This indicates the serious nature of self-admiration and pride. We ask Allaah to keep us safe and sound from that.
The matter of punishments is for Allaah to decide, and we know nothing about it except that which He has told us. The Kuffaar and Mushrikeen are major sinners who will abide in Hell forever, they and Iblees, may Allaah curse him.
there is one Hell and one Paradise, but each of them has degrees and levels. Paradise is sometimes mentioned in the plural in the Sunnah, but this does not mean that there are several types of Paradise; rather this is indicative of its greatness and the various degrees and levels in it, or it is indicative of the greatness of the reward of the one who enters it, as it says in the hadeeth of Anas ibn Maalik that Umm al-Rubayyi’ bint al-Bara’ , who was the mother of Haarithah ibn Suraaqah, came to the Prophet (peace and blessings of Allaah be upon him) and said: O Prophet of Allaah, will you not tell me about Haarithah?” – who had been killed at the battle of Badr by a stray arrow. “If he is in Paradise I will bear it with patience but if it is otherwise then I shall weep long and hard for him.” He said: “O Umm Haarithah, there are gardens in Paradise – according to another report: many gardens – and your son has attained the highest Firdaws.” Narrated by al-Bukhaari, 2809.
Secondly:
The levels of Hell differ according to the extent of their inhabitants’ kufr in this world. The hypocrites will be in the lowest level of Hell, as our Lord has told us (interpretation of the meaning):
“Verily, the hypocrites will be in the lowest depth (grade) of the Fire; no helper will you find for them”
[al-Nisa’ 4:145]
The least severe (in torment) of its levels – from which we seek refuge with Allaah – was mentioned by the Prophet (peace and blessings of Allaah be upon him) in the hadeeth reported by al-Nu’maan ibn Basheer who said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “The least severely punished of the people of Hell will be a man who has two shoes and shoelaces of Fire – according to another version: two live coals will be placed on the soles of his feet – because of which his brains will boil as a pot boils. He will not think that anyone is being punished more severely than him, but he will be the one who is punished most lightly.” Narrated by al-Bukhaari, 6562; Muslim, 212. The person is named specifically in a report narrated by Muslim, where it says that this is Abu Taalib, the paternal uncle of the Prophet (peace and blessings of Allaah be upon him), for whom Allaah will reduce the punishment because of the role he played in protecting Islam at the beginning.
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