Allah never takes injustice against his slave:
3:182. This is because of that (evil) hitch your hands have sent before you. And certainly, Allah is never unjust to (His) slaves.
3:108. These are the Verses of Allâh: We recite them to you (O Muhammad SAW) in truth, and Allâh wills no injustice to the 'Alâmîn (mankind and jinns).
4: 40. Surely! Allah wrongs not even of the weight of an atom (or a small ant), but if there is any good (done), He doubles it, and gives from Him a great reward.
4: 147. Why should Allah punish you if you have thanked (Him) and have believed in Him. And Allah is Ever All Appreciative (of good), All-knowing.
11: 101. We wronged them not, but they wronged themselves. So their âliha (gods), other than Allah, whom they invoked, profited them naught when there came the Command of your Lord, nor did they add aught (to their lot) but destruction.
11: 117. . And your Lord would never destroy the towns wrongfully, while their people were right-doers.
17: 16. And when we decide to destroy a town (population), we (first) send a definite order (to obey Allah and be righteous) to those among them [or we (first) increase in number those of its population] who are given the good things of this life. Then, they transgress therein, and thus the word (of torment) is justified against it (them). Then we destroy it with complete destruction.
26: 208. And never did we destroy a township, but it had its warners.
209. By way of reminder, and we have never been unjust.
27: 85. And the Word (of torment) will be fulfilled against them, because they have done wrong, and they will be unable to speak (in order to defend themselves).
28: 59. And never will your Lord destroy the towns (populations) until He sends to their mother town a Messenger reciting to them Our Verses. And never would we destroy the towns unless the people thereof are Zâlimûn (polytheists, wrong-doers, disbelievers in the Oneness of Allah, oppressors and tyrants).
29: 40. So We punished each (of them) for his sins, of them were some on whom We sent Hâsiban (a violent wind with shower of stones) [as the people of Lout (Lot)], and of them were some who were overtaken by As¬Saihah [torment ¬ awful cry, etc. (as Thamûd or Shu'aib's people)], and of them were some whom We caused the earth to swallow [as Qârûn (Korah)], and of them were some whom We drowned [as the people of Nûh (Noah), or Fir'aun (Pharaoh) and his people]. It was not Allah Who wronged them, but they wronged themselves.
30: 9. Do they not travel in the land, and see what was the end of those before them? They were superior to them in strength, and they tilled the earth and populated it in greater numbers than these (pagans) have done, and there came to them their Messengers with clear proofs. Surely, Allah wronged them not, but they used to wrong themselves.
10. Then evil was the end of those who did evil, because they belied the Ayât (proofs, evidences, verses, lessons, signs, revelations, Messengers, etc.) of Allah and made mock of them.
30: 47. And indeed we did send Messengers before you (O Muhammad SAW) to their own peoples. They came to them with clear proofs, then, we took vengeance on those who committed crimes (disbelief, setting partners in worship with Allah, sins, etc.), and (as for) the believers it was incumbent upon us to help (them).
35: 45. And if Allah were to punish men for that which they earned, He would not leave a moving (living) creature on the surface of the earth, but He gives them respite to an appointed term, and when their term comes, then verily, Allah is Ever All Seer of His slaves.
38: 14. Not one of them but belied the Messengers, therefore My Torment was justified,
39: 71. And the earth will shine with the light of its Lord (Allah, when He will come to judge among men) and the Book will be placed (open) and the Prophets and the witnesses will be brought forward, and it will be judged between them with truth, and they will not be wronged.
40: 31. ……… And Allah wills no injustice for (His) slaves.
41: 17. And as for Thamûd, We showed and made clear to them the Path of Truth (Islâmic Monotheism) through Our Messenger, (i.e. showed them the way of success), but they preferred blindness to guidance, so the Sâ'iqah (a destructive awful cry, torment, hit, a thunderbolt) of disgracing torment seized them, because of what they used to earn.
41: 46. Whosoever does righteous good deed it is for (the benefit of) his own self, and whosoever does evil, it is against his own self, and your Lord is not at all unjust to (His) slaves.
43: 54. Thus he [Fir'aun (Pharaoh)] befooled and misled his people, and they obeyed him. Verily, they were ever a people who were Fâsiqûn (rebellious, disobedient to Allah).
55. So when they angered Us, We punished them, and drowned them all.
45: 22. And Allah has created the heavens and the earth with truth, in order that each person may be recompensed what he has earned, and they will not be wronged.
50: 29. The Sentence that comes from me cannot be changed, and I am not unjust (to the least) to the slaves."
51: 44. But they insolently defied the Command of their Lord, so the Sâ'iqah overtook them while they were looking.
52: 16. Taste you therein its heat, and whether you are patient of it or impatient of it, it is all the same. You are only being requited for what you used to do.
59: 4. That is because they opposed Allah and His Messenger (Muhammad SAW). And whosoever opposes Allah, then verily, Allah is Severe in punishment.
65: 8. And many a town (population) revolted against the Command of its Lord and His Messengers, and We called it to a severe account (i.e. torment in this worldly life), and shall punish it with a horrible torment (in Hell, in the Hereafter).
9. So it tasted the evil result of its disbelief, and the consequence of its disbelief was loss (destruction in this life and an eternal punishment in the Hereafter).
69:10. And they disobeyed their Lord's Messenger, so He punished them with a strong punishment.
71:1 to 25
73: 16. But Fir'aun (Pharaoh) disobeyed the Messenger [Mûsa (Moses)], so We seized him with a severe punishment.
79: 17. Go to Fir'aun (Pharaoh), verily, he has transgressed all bounds (in crimes, sins, polytheism, disbelief, etc.).
18. And say to him: "Would you purify yourself (from the sin of disbelief by becoming a believer)",
19. And that I guide you to your Lord, so you should fear Him?
20. Then [Mûsa (Moses)] showed him the great sign (miracles).
21. But [Fir'aun (Pharaoh)] belied and disobeyed;
22. Then he turned his back, striving hard (against Allah).
25. So Allah, seized him with punishment for his last [i.e. his saying: "I am your lord, most high") (see Verse 79:24)] and first [(i.e. his saying, "O chiefs! I know not that you have a god other than I" (see Verse 28:38)] transgression.
26. Verily, in this is an instructive admonition for whosoever fears Allah.
89: 11. Who did transgress beyond bounds in the lands (in the disobedience of Allah).
12. And made therein much mischief.
13. So your Lord poured on them different kinds of severe torment.
91:11-15
98: 1. Those who disbelieve from among the people of the Scripture (Jews and Christians) and among Al-Mushrikûn, were not going to leave (their disbelief) until there came to them clear evidence.
2. A Messenger (Muhammad (Peace be upon him)) from Allah, reciting (the Qur'ân) purified pages [purified from Al-Bâtil (falsehood, etc.)].
3. Containing correct and straight laws from Allah.
4: 111. And whoever earns sin, he earns it only against himself. And Allâh is Ever All¬Knowing, All¬Wise.
Dawud :: Book 24 : Hadith 3566,68,75,84,92,93,94,21,27,28,3343,77 ,96
Bukhari :: Book 9 :: Volume 89 :: Hadith 320
Bukhari :: Book 8 :: Volume 82 :: Hadith 798
Bukhari :: Book 3 :: Volume 34 :: Hadith 418
Allha never punish wrong people [without the awareness of their sin]:
6: 131. This is because your Lord would not destroy the (populations of) towns for their wrong¬doing (i.e. associating others in worship along with Allâh) while their people were unaware (so the Messengers were sent).
8: 51. "This is because of that which your hands had forwarded. And verily, Allâh is not unjust to His slaves."
10: 54. And if every person who had wronged (by disbelieving in Allâh and by worshipping others besides Allâh), possessed all that is on earth, and sought to ransom himself therewith (it will not be accepted), and they would feel in their hearts regret when they see the torment, and they will be judged with justice, and no wrong will be done unto them.
15: 4. And never did We destroy a township but there was a known decree for it.
35: 45. And if Allâh were to punish men for that which they earned, He would not leave a moving (living) creature on the surface of the earth, but He gives them respite to an appointed term, and when their term comes, then verily, Allâh is Ever All¬Seer of His slaves.
Allah like/advice to people doing good virtue:
39: 53. Say: "O 'Ibâdî (My slaves) who have transgressed against themselves (by committing evil deeds and sins)! Despair not of the Mercy of Allâh, verily Allâh forgives all sins. Truly, He is Oft-Forgiving, Most Merciful.
54. "And turn in repentance and in obedience with true Faith (Islâmic Monotheism) to your Lord and submit to Him, (in Islâm), before the torment comes upon you, then you will not be helped.
55. "And follow the best of that which is sent down to you from your Lord (i.e. this Qur'ân, do what it orders you to do and keep away from what it forbids), before the torment comes on you suddenly while you perceive not!"
57: 21. Race one with another in hastening towards Forgiveness from your Lord (Allâh), and towards Paradise, the width whereof is as the width of heaven and earth, prepared for those who believe in Allâh and His Messengers. That is the Grace of Allâh which He bestows on whom He pleases. And Allâh is the Owner of Great Bounty.
64:11………..whosoever believes in Allâh, He guides his heart [to the true Faith with certainty, i.e. what has befallen him was already written for him by Allâh from the Qadar (Divine Preordainments)], and Allâh is the All-Knower of everything.
64: 16. So keep your duty to Allâh and fear Him as much as you can; listen and obey; and spend in charity, that is better for yourselves. And whosoever is saved from his own covetousness, then they are the successful ones.
66: 6. O you who believe! Ward off from yourselves and your families a Fire (Hell) whose fuel is men and stones, over which are (appointed) angels stern (and) severe, who disobey not, (from executing) the Commands they receive from Allâh, but do that which they are commanded.
76: 29. Verily! This (Verses of the Qur'ân) is an admonition, so whosoever wills, let him take a Path to his Lord (Allâh).
92: 5. As for him who gives (in charity) and keeps his duty to Allâh and fears Him,
6. And believes in Al-Husna(truth).
7. We will make smooth for him the path of ease (goodness).
92: 12. Truly! Ours it is (to give) guidance,
13. And truly, unto Us (belong) the last (Hereafter) and the first (this world).
14. Therefore I have warned you of a Fire blazing fiercely (Hell);
15. None shall enter it save the most wretched,
11: 112. So stand (ask Allah to make) you (Muhammad SAW) firm and straight (on the religion of Islâmic Monotheism) as you are commanded and those (your companions) who turn in repentance (unto Allah) with you, and transgress not (Allah’s legal limits). Verily, He is All-Seer of what you do.
113. And incline not toward those who do wrong, lest the Fire should touch you, and you have no protectors other than Allah, nor you would then be helped.
Muslim :: Book 1 : Hadith 367
" There is no god but Allah" and had in his heart virtue of the weight of a barley grain would come out of the Fire.
Muslim :: Book 1 : Hadith 355
He would then say: See, he whom you find having as much faith in his heart as a grain of mustard, bring him out.
Bukhari :: Book 9 :: Volume 93 :: Hadith 502
Narrated Abu Huraira:
The Prophet said, "Allah says: 'I am just as My slave thinks I am, (i.e. I am able to do for him what he thinks I can do for him) and I am with him if He remembers Me. If he remembers Me in himself, I too, remember him in Myself; and if he remembers Me in a group of people, I remember him in a group that is better than they; and if he comes one span nearer to Me, I go one cubit nearer to him; and if he comes one cubit nearer to Me, I go a distance of two outstretched arms nearer to him; and if he comes to Me walking, I go to him running.' "
Allha mercy more than anger:
Bukhari :: Book 9 :: Volume 93 :: Hadith 501
Bukhari :: Book 9 :: Volume 93 :: Hadith 643
Narrated Abu Huraira:
I heard Allah's Apostle saying, "Before Allah created the creations, He wrote a Book (wherein He has written): My Mercy has preceded my Anger." and that (Book) is written with Him over the Throne
Bukhari :: Book 4 :: Volume 54 :: Hadith 416
Muslim :: Book 37 : Hadith 6627,6628,6629,6630,6631,6632,6634,6635
Allha mercy/promise of Allah
28: 13. So did We restore him to his mother, that she might be delighted, and that she might not grieve, and that she might know that the Promise of Allâh is true. But most of them know not.
30: 6. (It is) a Promise of Allâh (i.e. Allâh will give victory to the Romans against the Persians), and Allâh fails not in His Promise, but most of men know not.
35: 45. And if Allâh were to punish men for that which they earned, He would not leave a moving (living) creature on the surface of the earth, but He gives them respite to an appointed term, and when their term comes, then verily, Allâh is Ever All¬Seer of His slaves.
42: 19. Allâh is very Gracious and Kind to His slaves. He gives provisions to whom He wills. And He is the All-Strong, the All-Mighty.
57:9. It is He Who sends down manifest Ayât (proofs, evidences, verses, lessons, signs, revelations, etc.) to His slave (Muhammad SAW) that He may bring you out from darkness into light. And verily, Allâh is to you full of kindness, Most Merciful.
85: 14. And He is Oft-Forgiving, full of love (towards the pious who are real true believers of Islâmic Monotheism),
Muslim :: Book 37 : Hadith 6631
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: There are one hundred (parts of) mercy for Allah and He has sent down out of these one part of mercy upon the jinn and human beings and the insects and it is because of this (one part) that they love one another, show kindness to one another and even the beast treats its young one with affection, and Allah has reserved ninetynine parts of mercy with which He would treat His servants on the Day of Resurrection.
Allha mercy greater than his anger:
27:73. "Verily, your Lord is full of Grace for mankind, yet most of them do not give thanks."
35: 45. And if Allâh were to punish men for that which they earned, He would not leave a moving (living) creature on the surface of the earth, but He gives them respite to an appointed term, and when their term comes, then verily, Allâh is Ever All¬Seer of His slaves.
Bukhari :: Book 9 :: Volume 93 :: Hadith 501,643
Bukhari :: Book 8 :: Volume 76 :: Hadith 476
Bukhari :: Book 8 :: Volume 73 :: Hadith 28 ,29