Creation is purposeful although God is purposeless

Matter that is related to the resurrection elucidates belief in the doomsday in soul purification. When soul purification that is considered as exalted purpose of propjets is possible, persons believe in the doomsday. If believers believe in perpetual future and reward and punishment of deeds, it will be effective. Moreover, if doomsday is forgotten, it will be ground of deviation. As reasons of the doomsday and the resurrection were mentioned, Quran mentions several reasons for the necessity of the resurrection and the doomsday such as reason of movement, reason of reality, reason of wisdom, reason of justice and reason of soul. World is an active unit that moves toward a specific purpose. To have purpose is certain for the world and Quran explain all trains. Reality should appear because there are falsity and reality in the world.
Quran states
يَوْمَ تُبْلَى السَّرَائِرُ
.The Day that (all) things secret will be tested
يَوْمَئِذٍ يَوَدُّ الَّذِينَ كَفَرُوا وَعَصَوُا الرَّسُولَ لَوْ تُسَوَّىٰ بِهِمُ الْأَرْضُ وَلَا يَكْتُمُونَ اللَّهَ حَدِيثًا
On that day those who reject Faith and disobey the messenger will wish that the earth Were made one with them: But never will they hide a single fact from Allah.
When reality appears, there will be no disagreements among persons and war among schools. Quran states
ذَٰلِكَ الْيَوْمُ الْحَقُّ ۖ فَمَن شَاءَ اتَّخَذَ إِلَىٰ رَبِّهِ مَآبًا
That Day will be the sure Reality: Therefore, whoso will, let him take a (straight) return to his Lord.
The third reason is reason of wisdom. Since God is sagacious, he never does futile things. Since the world belongs God, it follows purposes. Two matters should be considered in reason of wisdom: 1. God is needless and does not follow a specific purpose, but since God is sagacious, he never does purposeless action. Quran states
وَمَن جَاهَدَ فَإِنَّمَا يُجَاهِدُ لِنَفْسِهِ ۚ إِنَّ اللَّهَ لَغَنِيٌّ عَنِ الْعَالَمِينَ
And if any strive (with might and main), they do so for their own souls: for Allah is free of all needs from all creation.
Quran states about creation of creatures
وَمَا خَلَقْتُ الْجِنَّ وَالْإِنسَ إِلَّا لِيَعْبُدُونِ
.I have only created Jinns and men, that they may serve Me
Quran states purpose of world creation
وَمَا خَلَقْنَا السَّمَاءَ وَالْأَرْضَ وَمَا بَيْنَهُمَا لَاعِبِينَ
Not for (idle) sport did We create the heavens and the earth and all that is between.
وَمَا خَلَقْنَا السَّمَاءَ وَالْأَرْضَ وَمَا بَيْنَهُمَا بَاطِلًا ۚ ذَٰلِكَ ظَنُّ الَّذِينَ كَفَرُوا ۚ فَوَيْلٌ لِّلَّذِينَ كَفَرُوا مِنَ النَّارِ
Not without purpose did We create heaven and earth and all between! that were the thought of Unbelievers! but woe to the Unbelievers because of the Fire (of Hell).
Unbelievers imagine that existences is only world and when persons die, this life ends as Quran states
وَمَا خَلَقْنَا السَّمَاءَ وَالْأَرْضَ وَمَا بَيْنَهُمَا بَاطِلًا ۚ ذَٰلِكَ ظَنُّ الَّذِينَ كَفَرُوا ۚ فَوَيْلٌ لِّلَّذِينَ كَفَرُوا مِنَ النَّارِ
Not without purpose did We create heaven and earth and all between! that were the thought of Unbelievers! but woe to the Unbelievers because of the Fire (of Hell.
God considers the world as entertainment;
اعْلَمُوا أَنَّمَا الْحَيَاةُ الدُّنْيَا لَعِبٌ وَلَهْوٌ وَزِينَةٌ وَتَفَاخُرٌ بَيْنَكُمْ وَتَكَاثُرٌ فِي الْأَمْوَالِ وَالْأَوْلَادِ ۖ كَمَثَلِ غَيْثٍ أَعْجَبَ الْكُفَّارَ نَبَاتُهُ ثُمَّ يَهِيجُ فَتَرَاهُ مُصْفَرًّا ثُمَّ يَكُونُ حُطَامًا ۖ وَفِي الْآخِرَةِ عَذَابٌ شَدِيدٌ وَمَغْفِرَةٌ مِّنَ اللَّهِ وَرِضْوَانٌ ۚ وَمَا الْحَيَاةُ الدُّنْيَا إِلَّا مَتَاعُ الْغُرُورِ
Know ye (all), that the life of this world is but play and amusement, pomp and mutual boasting and multiplying, (in rivalry) among yourselves, riches and children. Here is a similitude: How rain and the growth which it brings forth, delight (the hearts of) the tillers; soon it withers; thou wilt see it grow yellow; then it becomes dry and crumbles away. But in the Hereafter is a Penalty severe (for the devotees of wrong). And Forgiveness from Allah and (His) Good Pleasure (for the devotees of Allah). And what is the life of this world, but goods and chattels of deception.
The world is certain contracts that are planned for life order. Quran states about purpose of persons
يَحْسَبُ الْإِنسَانُ أَن يُتْرَكَ سُدًى
. (Does man think that he will be left uncontrolled, (without purpose
Sagacious God never does futile actions and purposeless action is not from source of wisdom as Quran states
وَمَا خَلَقْتُ الْجِنَّ وَالْإِنسَ إِلَّا لِيَعْبُدُونِ
I have only created Jinns and men, that they may serve Me.
Quran states from Hazrat Musa (peace be upon him) states
وَقَالَ مُوسَىٰ إِن تَكْفُرُوا أَنتُمْ وَمَن فِي الْأَرْضِ جَمِيعًا فَإِنَّ اللَّهَ لَغَنِيٌّ حَمِيدٌ
And Moses said: "If ye show ingratitude, ye and all on earth together, yet is Allah free of all wants, worthy of all praise''.
Since God is needless naturally if persons do not worship, they will not achieve their purposes and it is not true that God will not a chive his purpose. As Quran states
Quran states
وَمَن جَاهَدَ فَإِنَّمَا يُجَاهِدُ لِنَفْسِهِ ۚ إِنَّ اللَّهَ لَغَنِيٌّ عَنِ الْعَالَمِينَ
And if any strive (with might and main), they do so for their own souls: for Allah is free of all needs from all creation.
وَمِنَ النَّاسِ مَن يَقُولُ آمَنَّا بِاللَّهِ فَإِذَا أُوذِيَ فِي اللَّهِ جَعَلَ فِتْنَةَ النَّاسِ كَعَذَابِ اللَّهِ وَلَئِن جَاءَ نَصْرٌ مِّن رَّبِّكَ لَيَقُولُنَّ إِنَّا كُنَّا مَعَكُمْ ۚ أَوَلَيْسَ اللَّهُ بِأَعْلَمَ بِمَا فِي صُدُورِ الْعَالَمِينَ
Then there are among men such as say, "We believe in Allah"; but when they suffer affliction in (the cause of) Allah, they treat men´s oppression as if it were the Wrath of Allah! And if help comes (to thee) from thy Lord, they are sure to say, "We have (always) been with you!" Does not Allah know best all that is in the hearts of all creation.
وَقَالَ إِنَّمَا اتَّخَذْتُم مِّن دُونِ اللَّهِ أَوْثَانًا مَّوَدَّةَ بَيْنِكُمْ فِي الْحَيَاةِ الدُّنْيَا ۖ ثُمَّ يَوْمَ الْقِيَامَةِ يَكْفُرُ بَعْضُكُم بِبَعْضٍ وَيَلْعَنُ بَعْضُكُم بَعْضًا وَمَأْوَاكُمُ النَّارُ وَمَا لَكُم مِّن نَّاصِرِينَ
And he said: "For you, ye have taken (for worship) idols besides Allah, out of mutual love and regard between yourselves in this life; but on the Day of Judgment ye shall disown each other and curse each other: and your abode will be the Fire, and ye shall have none to help.
فَكُلًّا أَخَذْنَا بِذَنبِهِ ۖ فَمِنْهُم مَّنْ أَرْسَلْنَا عَلَيْهِ حَاصِبًا وَمِنْهُم مَّنْ أَخَذَتْهُ الصَّيْحَةُ وَمِنْهُم مَّنْ خَسَفْنَا بِهِ الْأَرْضَ وَمِنْهُم مَّنْ أَغْرَقْنَا ۚ وَمَا كَانَ اللَّهُ لِيَظْلِمَهُمْ وَلَٰكِن كَانُوا أَنفُسَهُمْ يَظْلِمُونَ
Each one of them We seized for his crime: of them, against some We sent a violent tornado (with showers of stones); some were caught by a (mighty) Blast; some We caused the earth to swallow up; and some We drowned (in the waters): It was not Allah Who injured (or oppressed) them:" They injured (and oppressed) their own souls.
وَلَا تُجَادِلُوا أَهْلَ الْكِتَابِ إِلَّا بِالَّتِي هِيَ أَحْسَنُ إِلَّا الَّذِينَ ظَلَمُوا مِنْهُمْ ۖ وَقُولُوا آمَنَّا بِالَّذِي أُنزِلَ إِلَيْنَا وَأُنزِلَ إِلَيْكُمْ وَإِلَٰهُنَا وَإِلَٰهُكُمْ وَاحِدٌ وَنَحْنُ لَهُ مُسْلِمُونَ
And dispute ye not with the People of the Book, except with means better (than mere disputation), unless it be with those of them who inflict wrong (and injury): but say, "We believe in the revelation which has come down to us and in that which came down to you; Our Allah and your Allah is one; and it is to Him we bow (in Islam).
Reason of reality considers purpose for people all over the world and proves the doomsday, but reason of movement proves the doomsday for the material world. Exalted God is absolutely needless and it is not true that if God does not benefit, he will not be imperfect. Quran states
وَمَن جَاهَدَ فَإِنَّمَا يُجَاهِدُ لِنَفْسِهِ ۚ إِنَّ اللَّهَ لَغَنِيٌّ عَنِ الْعَالَمِينَ
And if any strive (with might and main), they do so for their own souls: for Allah is free of all needs from all creation.
When Quran admires Hazrat Ibrahim (peace be upon him) and other prophets, it states
إِنَّا أَخْلَصْنَاهُم بِخَالِصَةٍ ذِكْرَى الدَّارِ
Verily We did choose them for a special (purpose)- proclaiming the Message of the Hereafter.
وَلَكُمْ نِصْفُ مَا تَرَكَ أَزْوَاجُكُمْ إِن لَّمْ يَكُن لَّهُنَّ وَلَدٌ ۚ فَإِن كَانَ لَهُنَّ وَلَدٌ فَلَكُمُ الرُّبُعُ مِمَّا تَرَكْنَ ۚ مِن بَعْدِ وَصِيَّةٍ يُوصِينَ بِهَا أَوْ دَيْنٍ ۚ وَلَهُنَّ الرُّبُعُ مِمَّا تَرَكْتُمْ إِن لَّمْ يَكُن لَّكُمْ وَلَدٌ ۚ فَإِن كَانَ لَكُمْ وَلَدٌ فَلَهُنَّ الثُّمُنُ مِمَّا تَرَكْتُم ۚ مِّن بَعْدِ وَصِيَّةٍ تُوصُونَ بِهَا أَوْ دَيْنٍ ۗ وَإِن كَانَ رَجُلٌ يُورَثُ كَلَالَةً أَوِ امْرَأَةٌ وَلَهُ أَخٌ أَوْ أُخْتٌ فَلِكُلِّ وَاحِدٍ مِّنْهُمَا السُّدُسُ ۚ فَإِن كَانُوا أَكْثَرَ مِن ذَٰلِكَ فَهُمْ شُرَكَاءُ فِي الثُّلُثِ ۚ مِن بَعْدِ وَصِيَّةٍ يُوصَىٰ بِهَا أَوْ دَيْنٍ غَيْرَ مُضَارٍّ ۚ وَصِيَّةً مِّنَ اللَّهِ ۗ وَاللَّهُ عَلِيمٌ حَلِيمٌ
In what your wives leave, your share is a half, if they leave no child; but if they leave a child, ye get a fourth; after payment of legacies and debts. In what ye leave, their share is a fourth, if ye leave no child; but if ye leave a child, they get an eighth; after payment of legacies and debts. If the man or woman whose inheritance is in question, has left neither ascendants nor descendants, but has left a brother or a sister, each one of the two gets a sixth; but if more than two, they share in a third; after payment of legacies and debts; so that no loss is caused (to any one). Thus is it ordained by Allah; and Allah is All-knowing, Most Forbearing.
وَالْمُحْصَنَاتُ مِنَ النِّسَاءِ إِلَّا مَا مَلَكَتْ أَيْمَانُكُمْ ۖ كِتَابَ اللَّهِ عَلَيْكُمْ ۚ وَأُحِلَّ لَكُم مَّا وَرَاءَ ذَٰلِكُمْ أَن تَبْتَغُوا بِأَمْوَالِكُم مُّحْصِنِينَ غَيْرَ مُسَافِحِينَ ۚ فَمَا اسْتَمْتَعْتُم بِهِ مِنْهُنَّ فَآتُوهُنَّ أُجُورَهُنَّ فَرِيضَةً ۚ وَلَا جُنَاحَ عَلَيْكُمْ فِيمَا تَرَاضَيْتُم بِهِ مِن بَعْدِ الْفَرِيضَةِ ۚ إِنَّ اللَّهَ كَانَ عَلِيمًا حَكِيمًا
Also (prohibited are) women already married, except those whom your right hands possess: Thus hath Allah ordained (Prohibitions) against you: Except for these, all others are lawful, provided ye seek (them in marriage) with gifts from your property,- desiring chastity, not lust, seeing that ye derive benefit from them, give them their dowers (at least) as prescribed; but if, after a dower is prescribed, agree Mutually (to vary it), there is no blame on you, and Allah is All-knowing, All-wise.
مَن لَّمْ يَسْتَطِعْ مِنكُمْ طَوْلًا أَن يَنكِحَ الْمُحْصَنَاتِ الْمُؤْمِنَاتِ فَمِن مَّا مَلَكَتْ أَيْمَانُكُم مِّن فَتَيَاتِكُمُ الْمُؤْمِنَاتِ ۚ وَاللَّهُ أَعْلَمُ بِإِيمَانِكُم ۚ بَعْضُكُم مِّن بَعْضٍ ۚ فَانكِحُوهُنَّ بِإِذْنِ أَهْلِهِنَّ وَآتُوهُنَّ أُجُورَهُنَّ بِالْمَعْرُوفِ مُحْصَنَاتٍ غَيْرَ مُسَافِحَاتٍ وَلَا مُتَّخِذَاتِ أَخْدَانٍ ۚ فَإِذَا أُحْصِنَّ فَإِنْ أَتَيْنَ بِفَاحِشَةٍ فَعَلَيْهِنَّ نِصْفُ مَا عَلَى الْمُحْصَنَاتِ مِنَ الْعَذَابِ ۚ ذَٰلِكَ لِمَنْ خَشِيَ الْعَنَتَ مِنكُمْ ۚ وَأَن تَصْبِرُوا خَيْرٌ لَّكُمْ ۗ وَاللَّهُ غَفُورٌ رَّحِيمٌ
If any of you have not the means wherewith to wed free believing women, they may wed believing girls from among those whom your right hands possess: And Allah hath full knowledge about your faith. Ye are one from another: Wed them with the leave of their owners, and give them their dowers, according to what is reasonable: They should be chaste, not lustful, nor taking paramours: when they are taken in wedlock, if they fall into shame, their punishment is half that for free women. This (permission) is for those among you who fear sin; but it is better for you that ye practise self-restraint. And Allah is Oft-forgiving, Most Merciful.
وَاعْبُدُوا اللَّهَ وَلَا تُشْرِكُوا بِهِ شَيْئًا ۖ وَبِالْوَالِدَيْنِ إِحْسَانًا وَبِذِي الْقُرْبَىٰ وَالْيَتَامَىٰ وَالْمَسَاكِينِ وَالْجَارِ ذِي الْقُرْبَىٰ وَالْجَارِ الْجُنُبِ وَالصَّاحِبِ بِالْجَنبِ وَابْنِ السَّبِيلِ وَمَا مَلَكَتْ أَيْمَانُكُمْ ۗ إِنَّ اللَّهَ لَا يُحِبُّ مَن كَانَ مُخْتَالًا فَخُورًا
Serve Allah, and join not any partners with Him; and do good- to parents, kinsfolk, orphans, those in need, neighbours who are near, neighbours who are strangers, the companion by your side, the wayfarer (ye meet), and what your right hands possess: For Allah loveth not the arrogant, the vainglorious.
وَإِنَّ مِنكُمْ لَمَن لَّيُبَطِّئَنَّ فَإِنْ أَصَابَتْكُم مُّصِيبَةٌ قَالَ قَدْ أَنْعَمَ اللَّهُ عَلَيَّ إِذْ لَمْ أَكُن مَّعَهُمْ شَهِيدًا
There are certainly among you men who would tarry behind: If a misfortune befalls you, they say: "Allah did favour us in that we were not present among them.