The Mahdi will come at the end of time; he is one of the Rightly-Guided Caliphs and Imâms.The matter we intend to discuss has been proven by Ahadîth narrated from the Prophet – sallallâhu ’alayhi wa sallam -: that the Mahdi will appear at the end of time. I believe that he will appear before Jesus the son of Mary comes down, as the Ahadîth indicate. The Mahdi will rule until the False Messiah (al-Masih al-Dajjal) appears, who will spread oppression and corruption. The only ones who will know him well and avoid his evil will be those who have great knowledge and îmân (faith).
Abû Dâwûd reported a Hadîth from 'Abdullâh ibn Masud: The Prophet said, "If there were only one day left for the world, that day would be lengthened until a man from among my descendants or from among the people of my household, was sent; his name will be the same as my name, and his fathers name will be the same as my fathers name. He will fill the earth with justice and fairness, just as it will have been filled with injustice and oppression. The world will not end until a man of my household, whose name is the same as mine, holds away."
Who is Dajjal?
The Dajjal will be a man, created by Allâh to be a test for people at the end of time. He will emerge from a road in an area between Shaam and 'Iraaq and will begin to call the people to worship him. A majority of the people that will follow him will be from the Jews, women and bedouins. Seventy-thousand Jews from Asfahaan (in present-day Iran) will follow him and he will travel throughout the entire earth, just as the wind blows rain in all directions, except for Makkah and Madeenah, for he will be prevented from entering them Many will be led astray through him, and many will be guided through him; only the sinful will be led astray The length of his stay will be forty days. One day will be like a year, one day like a month, one day like a week and the rest of the days will be as normal
Abû Hurayrah said, "The Prophet said, "The Hour will not come ... until nearly 30 "dajjals" (liars) appear, each one claiming to be a messenger from Allâh.'" (al-Bukhârî Muslim)
Abû Hurayrah said, "The Prophet said, 'Shall I tell you something about the Dajjal which no Prophet has ever told his people before me? The Dajjal is one-eyed and will bring with him something which will resemble Paradise and Hell; but that which he calls Paradise will in fact be Hell. I warn you against him as Noah warned his people against him.'" (al-Bukhârî,)
From these Ahadîth, we can see that Allâh will test His servants with the Dajjal and by the miracles which he will be permitted to perform: as we have already mentioned, the Dajjal will order the sky to rain for those who accept him, and will order the earth to bring forth its fruits so that they and their livestock will eat of it, and their flocks will return fat and with their udders full of milk. Those who reject the Dajjal and refuse to believe in him will suffer drought and famine; people and livestock will die, and wealth and supplies of food will be depleted. People will follow the Dajjal like swarms of bees, and he will kill a young man and bring him back to life. This is not a kind of magic; it will be something real with which Allâh will test His servants at the end of time. Many will be led astray, and many will be guided by it. Those who doubt will disbelieve, but those who believe will be strengthened in their faith. Even if he brings great terror, the word Kafir will be clearly written between his eyes; one report explains that it will be written "Kaf, Fa, Ra," from which we can understand that it will be written perceptibly, not abstractly, as some people say. One of his eyes will be blind.
Protection agninst the Dajjal
1.Seeking refuge with Allâh from his tribulation
2. Memorising certain Ayat from Surat al-Ka. Abûl-Dira reported that the Prophet - sallallâhu ’alayhi wa sallam - said, "Whoever memorises the first ten Ayat of Surat al-Kahf will be protected from the Dajjal." (Abû Dâwûd)
3. Keeping away from the Dajjal One way to be protected from the tribulation of the Dajjal is to live in Madînah or makkah. Abu Hurayrah reported that the Prophet - sallallâhu ’alayhi wa sallam - said, "There are angels standing at the gates of Madînah; neither plague nor the Dajjal can enter it." (al-Bukhârî, Muslim)
How will Isa – alayhi sallam- (Jeses) appear?
The false Messiah will remain for a while, destroying mankind completely, and the earth will witness the greatest Fitnah (tribulation) in its history. Then the Messiah Jesus (alayhe sallam) will descend, bringing justice from heaven. He will kill the Dajjal, and there will be years of safety and security.
This state of affairs will continue for some years, until the death of Jesus. The Ulama differ concerning the order in which the other greater signs of the Hour will come about.
Abû Hurayrah reported that the Prophet - sallallâhu ’alayhi wa sallam - said, "The Prophets are like brothers; they have different mothers but their religion is one. I am the closest of all the people to Jesus son of Mary, because there is no other Prophet between him and myself. He will come down again as a just leader, and when you see him, you will recognise him. He is of medium height and his colouring is reddish-white. He will be wearing two garments, and his hair will look wet. He will break the cross, kill the pigs, abolish the Jizyah and call the people to Islâm. During his time, Allâh will end every religion and sect other than Islâm, and will destroy the Dajjal. Then peace and security will prevail on earth, so that lions will graze with camels, tigers with cattle, and wolves with sheep; children will be able to play with snakes without coming to any harm. Jesus will remain for forty years, then die, and the Muslims will pray for him." (Ahmad)