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Surah 35. Fatir
Ayah 5 - 7
5 يَـٰٓأَيُّهَا ٱلنَّاسُ إِنَّ وَعْدَ ٱللَّهِ حَقٌّ ۖ فَلَا تَغُرَّنَّكُمُ ٱلْحَيَوٰةُ ٱلدُّنْيَا ۖ وَلَا يَغُرَّنَّكُم بِٱللَّهِ ٱلْغَرُورُ
6 إِنَّ ٱلشَّيْطَـٰنَ لَكُمْ عَدُوٌّ فَٱتَّخِذُوهُ عَدُوًّا ۚ إِنَّمَا يَدْعُوا۟ حِزْبَهُۥ لِيَكُونُوا۟ مِنْ أَصْحَـٰبِ ٱلسَّعِيرِ
7 ٱلَّذِينَ كَفَرُوا۟ لَهُمْ عَذَابٌ شَدِيدٌ ۖ وَٱلَّذِينَ ءَامَنُوا۟ وَعَمِلُوا۟ ٱلصَّـٰلِحَـٰتِ لَهُم مَّغْفِرَةٌ وَأَجْرٌ كَبِيرٌ
[5-7] O people, the promise of Allah is surely true.10 Therefore, let not the worldly life deceive you,11 nor let that great deceiver deceive you concerning Allah.12 Indeed, Satan is your enemy; therefore, you also should treat kiln as your enemy. He is inviting his followers towards his way so that they may join the dwellers of Hell. Those who disbelieve13 shall have a severe punishment, and those who believe and do good works shall have forgiveness and a rich reward.14
10"The promise" implies the promise of the Hereafter to which allusion was made in the preceding sentence, saying: 'All affairs shall ultimately be presented before Allah.
11"Let not...deceive you": "Deceive you that the world is an end in itself: that there is no Hereafter when one will have to render an account of one's deeds: or that even if there is the Hereafter, the one who is enjoying life here will enjoy life there, too."
12"Great deceiver": Satan, as is evident from the next sentence. And "deceive you concerning Allah" means:
(1) That he should stake some people believe that Allah does not exist at All;
(2) involve others in the misunderstanding that Allah after having once created the world, has retired and has now practically nothing to do with the universe any more;
(3) delude others into believing that Allah no doubt is running the universe, but He has taken no responsibility of providing guidance to man: therefore, Revelation and Prophethood are a mere deception; and
(4) give still others the false hope that since Allah is All-Forgiving and All-Merciful. He will forgive one whatever sins one might have committed, and that He has some beloved ones too: if one remains attached to them, success and salvation are assured.
13Those who disbelieve : those who will refuse to believe in this invitation of Allah's Book and His Messenger.
14That is, Allah will overlook their errors and will reward them for their good deeds not merely with what they will just deserve but much more richly and generously.