On a day unknown to man but preordained by Allah, when people least expect it, Allah will give permission for the Qiyâmah to begin. The archangel Israfil, referred to as the Caller, will sound a horn sending out a “Blast of Truth” and everyone will have to stand before Allah and be accounted for their deeds in this life, and will be sent to Paradise or Hell by Allah’s judgement.

There will be many signs for the Day of Judgement as told by Allah in the Quran and Prophet Muhammad ﷺ.
According to Sunnah, the Dajjal (the Deceiver), the Mahdi (the Guided One) and Prophet Jesus (Isa) will be on Earth the days preceding the Day of Judgement. The Dajjal will mislead people and the Mahdi will precede the coming of Jesus and will fight for Islam.

The event of the Last Day will begin by the blowing of Israfil’s horn, and people will go through various stages before they meet the almighty Allah. There will be a gathering on a white, vast featureless ground, and be called on by Allah where the angels will recount the person’s good and bad deeds. According to these, Allah will judge whether the person should go to Paradise or Hell to abide in forever in the afterlife.

Quran Quotes

” But how (will they fare) when we gather them together against a day about which there is no doubt, and each soul will be paid out just what it has earned, without (favour or) injustice?
Quran Surah 3 Verse 25

“We shall set up scales of justice for the Day of Judgement, so that not a soul will be dealt with unjustly in the least, and if there be (no more than) the weight of a mustard seed, We will bring it (to account): and enough are We to take account.
Quran Surah 21 Verse 47

“And the Book (of Deeds) will be placed (before you); and thou wilt see the sinful in great terror because of what is (recorded) therein; they will say, “Ah! woe to us! what a Book is this! It leaves out nothing small or great, but takes account thereof!” They will find all that they did, placed before them: And not one will thy Lord treat with injustice.
Quran Surah 18 Verse 49

“And they say: “None shall enter Paradise unless he be a Jew or a Christian.” Those are their (vain) desires. Say: “Produce your proof if ye are truthful.” Nay,-whoever submits His whole self to God and is a doer of good,- He will get his reward with his Lord; on such shall be no fear, nor shall they grieve.
Quran Surah 2 Verses 111 – 112

Hadith Quotes

“The first of people against whom judgment will be pronounced on the Day of Resurrection will be a man who died a martyr. He will be brought and Allah will make known to him His favours and he will recognize them. [The Almighty] will say: ‘And what did you do about them?’ He will say: ‘I fought for You until I died a martyr.’ He will say: ‘You have lied – you did but fight that it might be said [of you]: ‘He is courageous.’’ And so it was said. Then he will be ordered to be dragged along on his face until he is cast into Hell-fire. [Another] will be a man who has studied [religious] knowledge and has taught it and who used to recite the Qur’an. He will be brought and Allah will make known to him His favours and he will recognize them. [The Almighty] will say: ‘And what did you do about them?’ He will say: ‘I studied [religious] knowledge and I taught it and I recited the Qur’an for Your sake.’ He will say: ‘You have lied – you did but study [religious] knowledge that it might be said [of you]: ‘He is learned.’’ And you recited the Qur’an that it might be said [of you]: ‘He is a reciter.’ And so it was said. Then he will be ordered to be dragged along on his face until he is cast into Hell-fire. [Another] will be a man whom Allah had made rich and to whom He had given all kinds of wealth. He will be brought and Allah will make known to him His favours and he will recognize them. [The Almighty] will say: ‘And what did you do about them?’ He will say: ‘I left no path [un-trodden] in which You like money to be spent without spending in it for Your sake.’ He will say: ‘You have lied – you did but do so that it might be said [of you]: ‘He is open-handed.’’ And so it was said. Then he will be ordered to be dragged along on his face until he is cast into Hell-fire.”
It was related by Muslim (also by at-Tirmidhi and an-Nasa’i). 

“Allah (mighty and sublime be He) says:
“The first of his actions for which a servant of Allah will be held accountable on the Day of Resurrection will be his prayers.’ If they are in order, then he will have prospered and succeeded; and if they are wanting, then he will have failed and lost. If there is something defective in his obligatory prayers, the Lord (glorified and exalted be He) will say: ‘See if My servant has any supererogatory prayers with which may be completed that which was defective in his obligatory prayers.’ Then the rest of his actions will be judged in like fashion.”
On the authority of Abu Hurayrah (may Allah be pleased with him) from the Prophet (peace and blessings of Allah be upon him)
It was related by at-Tirmidhi (also by Abu Dawud, an-Nasa’i, Ibn Majah and Ahmad). 

“Paradise and Hell-fire disputed together, and Hell-fire said: ‘In me are the mighty and the haughty.’ Paradise said: ‘In me are the weak and the poor.’ So Allah judged between them, [saying]: ‘You are Paradise, My mercy; through you I show mercy to those I wish. And you are Hell-fire, My punishment; through you I punish those I wish, and it is incumbent upon Me that each of you shall have its fill.’”
On the authority of Abu Sa’id al-Khudri (may Allah be pleased with him), who said that the Messenger of Allah (peace and blessings of Allah be upon him)
It was related by Muslim (also by al-Bukhari and at-Tirmidhi).