Hadith about the Dajjal
Abdullah Ibn 'Omar said, "'Omar Ibn al-Khattab went along with the Prophet and a group of people to Ibn Sayyad, and found him playing with some children near the battlement of Banu Maghalah. At that time Ibn Sayyad was on the threshold of adolescence; he did not realise that anybody was near until the Prophet struck him on the back. The Prophet said to him: 'Do you bear witness than I am the Messenger of Allah?' Ibn Sayyad looked at him and said, 'I bear witness that you are the Prophet of the unlettered.' Then Ibn Sayyad said to the Prophet, 'Do you bear witness that I am the Messenger of Allah? 'The Prophet dismissed this and said, 'I believe in Allah and His Messengers.' Then the Prophet asked him, 'What do you see?' Ibn Sayyad said, 'Sometimes a truthful person comes to me, and sometimes a liar.' The Prophet said to him, 'You are confused', then he said, 'I am hiding something from you.' Ibn Sayyad said, 'It is Dukh.' The Prophet said, 'Silence! You will not be able to go beyond your rank.' 'Omar Ibn al-Khattab said, 'O Messenger of Allah, shall I cut off his head?' The Prophet said, 'If he is (the Dajjal) you will not be able to overpower him, and if he is not, then killing will not do you any good.'"
Salim Ibn 'Abdullah said, "I heard 'Abdullah Ibn 'Omar say, 'After that, the Prophet and Ubayy Ibn Ka'b went along to the palm trees where Ibn Sayyad was. The Prophet started to hide behind a tree, with the intention of hearing something from Ibn Sayyad before Ibn Sayyad saw him. The Prophet saw him lying on a bed, murmuring beneath a blanket. Ibn Sayyad's mother saw the Prophet hiding behind a tree, and said to her son, "O Saf (Ibn Sayyad's first name), here is Mohammad!" Ibn Sayyad jumped up, and the Prophet said, "If you had left him alone, he would have explained himself.''
Salim said, "'Abdullah Ibn 'Omar said, The Prophet stood up to address the people. He praised Allah as He deserved to be praised, then he spoke about the Dajjal: 'I warn you against him; there is no Prophet who has not warned his people against him, even Noah warned his people against him. But I will tell you something which no other Prophet has told his people. You must know that the Dajjal is one-eyed, and Allah is not one-eyed.'"
Ibn Shihab said: "'Omar Ibn Thabit al-Ansari told me that some of the Companions of the Prophet told him that on the day when he warned the people about the Dajjal, the Prophet said: "There will be written between his eyes the word Kafir (unbeliever). Everyone who resents his bad deeds - or every believer- will be able to read it." He also said, "You must know that no one of you will be able to see his Lord until he dies.'" (Muslim, al-Bukhari). Ibn 'Omar said, "The Prophet mentioned the Dajjal to the people. He said, "Allah is not one-eyed, but the Dajjal is blind in his right eye, and his eye is like a floating grape.'" (Muslim) Anas Ibn Malik said, "The Prophet said, 'there has never been a Prophet who did not warn his people against that one-eyed liar. Verily he is one-eyed and your Lord is not one-eyed. On his forehead will be written the letter Kaf, Fa, Ra (Kafir).'" (Muslim, al-Bukhari)
Hudhayfah said, "The Prophet said, 'I know more about the powers which the Dajjal will have than he will know himself. He will have two flowing rivers: one will appear to be pure water, and the other will appear to be flaming fire. Whosoever lives to see that, let him choose the river which seems to be fire, then let him close his eyes, lower his head and drink from it, for it will be cold water. The Dajjal will be one-eyed; the place where one eye should be will be covered by a piece of skin. On his forehead will be written the word Kafir, and every believer, whether literate or illiterate, will be able to read it.'" (Muslim)
Abu 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-Bukhari, Muslim)
Mohammad Ibn Munkadir said: "I saw Jabir Ibn 'Abdullah swearing by Allah that Ibn Sayyad was the Dajjal, so I asked him, 'Do you swear by Allah?' He said, 'I heard 'Omar swear to that effect in the presence of the Prophet, and the Prophet did not disapprove of it.'" Some 'ulama' (scholars) say that some of the Sahabah (Companions of the Prophet) believed Ibn Sayyad to be the greater Dajjal, but that is not the case: Ibn Sayyad was a lesser dajjal. Ibn Sayyad travelled between Makkah and Madina with Abu Sa'id, and complained to him about the way that people were saying that he was the Dajjal. Then he said to Abu Sa'id, "Did not the Prophet say that the Dajjal would not enter Madina? I was born there. Did not he say that he would not have any children? - I have children. Did not he say that he would be a Kafir? - I have embraced Islam. Of all the people, I know the most about him: I know where he is now. If I were given the opportunity to be in his place, I would not resent it.'" (al-Bukhari, Muslim)