Human beings were brought into being for the worship of Allah Most High. Whether the person does good deeds or bad, he/she will anyhow receive the reward or punishment of deeds.
This world and all its pleasures will end and everybody has to stand before Allah Most High. With the very thought of the hereafter, a human beings stops from committing bad deeds. The aggressor refrains from his aggression and the oppressed feel relief that this hardship is only of a few days.
The Prophet has informed us of everything
The Holy Prophet (Sallallahu alaihi wa sallam) has not left us wanting in knowledge in any aspect of life and has brought us out in to the light of knowledge from the darkness of ignorance. He has conveyed every incident that will happen till the Day of Judgment and has also conveyed the signs of the Day of Judgment, so that His Ummah does not feel anxiety about anything.
Signs of Day of Judgment
There is a Hadith in Sahih Muslim: The Holy Prophet (Sallallahu alaihi wa sallam) said: Indeed! The Day of Judgment will not be established until you see 10 signs before it and He described coming of smoke, Dajjal, Daabbatul Ardh, rising of the sun from the west, descent of Prophet Isa (May peace be upon him), Yajuj and Majuj and the sinking of land at 3 places – One will be in the east, one will be in the west and one in Arabia. The last sign among all of them will be a fire which will start from Yemen and drive people towards the Mahshar and it is mentioned in another narration, there will be a fire, which will start from Aden and drive people towards Mahshar .(Sahih Muslim, Hadith No. 7467)
Dajjal
In the details of the signs of the Day of Judgment, it is said that just before Day of Judgment, these signs will appear. The smoke before Day of Judgment will be present for 40 days. A believer will only feel like a cold, but a disbeliever will be in great agony. The greatest trial before Day of Judgment will be of Dajjal. He will claim godhood. The Holy Prophet (Sallallahu alaihi wa sallam) said: Dajjal will be blind in one eye and he will be lame and your Lord is above all defects and flaws. Dajjal will remain in this world for 40 years and according to some Hadith 40 days and will spread unrest and turmoil in the world. He will also show conjuring tricks. There will be a garden with him and a hell. In reality, his garden will be hell and his hell will be a means to enter paradise. He will command the earth and the earth will grow its produce and cast out its treasures. He will command the skies and rain will start pouring. A drought-hit place will become green. Weak animals will become plump and strong, but all this will be an illusion. This trickery will not affect those who are firm in their belief and faith.
Dajjal will not enter Makkah and Madina
He will roam the whole world except the 2 Holy Cities of Makkah and Madina. It is given in Sahih Bukhari that the Holy Prophet (Sallallahu alaihi wa sallam) said: Dajjal will not be able to enter Madina. That day Madina will have 7 doors and on each door, angels will stand guard.
When should we offer Salaat?
When the Holy Prophet (Sallallahu alaihi wa sallam) said that near Day of Judgment, 1 day will be like 1 year, the Companions asked: How should Salaat be offered then? Here this question shows the purity of their emotions and sentiments. In these dangerous times also, they did not ask about saving life and wealth, but they ask about obeying the rules of Islam. The Holy Prophet (Sallallahu alaihi wa sallam) said: You estimate the time of Salaat and offer it i.e. estimate the time between one Salaat to the other and offer Salaat according to it. In this Hadith, the solution of when to offer Salaat if living in a place where there is 6 months of day and 6 months of night is also present i.e. there Salaat should be offered by estimating the time between each Salaat.
The coming of Prophet Isa, Imam Mahdi and killing of Dajjal
In the signs of Day of Judgment, it is said that in Ramadhan, Imam Mahdi (May Allah be well pleased with him) will come. He will be from the progeny from Imam Hasan Mujaba (May Allah be well pleased with him). His stay will be for 7 days. On the eastern minaret of the Grand Mosque of Damascus, Prophet Isa (May peace be upon him) will descend with his hands on the shoulders of angels at the time of Fajr as a follower. From his blessed head, droplets of water will be dripping like pearls. Imam Mahdi (May Allah be well pleased with him) will lead the Fajr Salaat. After the Salaat Ul Fajr, all the doors of the mosque will be thrown open. At that time, Dajjal will be standing there along with 70,000 Jews. On seeing Prophet Isa (May peace be upon him), he will start dissolving and will flee out of fear. Prophet Isa (May peace be upon him) will chase him and kill him at a place “Lood.”