Narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that Sayyiduna Umar (may Allah be pleased with him) went with the Messenger of Allah (peace and blessings be upon him) along with some people to Ibn Sayyad, until they saw him playing with boys near the fort of Bani Maghala. At that time, Ibn Sayyad was close to puberty. He did not notice them until the Messenger of Allah (peace and blessings be upon him) struck his hand on his back. Then the Prophet (peace and blessings be upon him) asked him, "Do you bear witness that I am the Messenger of Allah?" Ibn Sayyad looked at him and said, "I bear witness that you are the Messenger of the unlettered (Ummiyeen)." (Ummi refers to one who is unlettered and uneducated.) Then Ibn Sayyad said to the Messenger of Allah (peace and blessings be upon him), "Do you bear witness that I am the Messenger of Allah?" The Messenger of Allah (peace and blessings be upon him) did not answer this, nor did he request him to become Muslim, because the Prophet (peace and blessings be upon him) had despaired of his accepting Islam. (And in one narration, it is mentioned with a 'Saad' that the Prophet (peace and blessings be upon him) struck him with his foot.) And he said, "I believe in Allah and His Messengers." Then the Messenger of Allah (peace and blessings be upon him) asked him, "What do you see?" He replied, "Sometimes a truthful one comes to me and sometimes a liar." The Messenger of Allah (peace and blessings be upon him) said, "Your matter has become confused (i.e., mixed with truth and falsehood)." Then the Prophet (peace and blessings be upon him) said, "I have hidden a matter in my heart to ask you." Ibn Sayyad said, "It is Dukhan (smoke)." The Messenger of Allah (peace and blessings be upon him) said, "Be humiliated! You cannot go beyond your status." Sayyiduna Umar (may Allah be pleased with him) said, "O Messenger of Allah! Allow me, I will strike his neck." The Messenger of Allah (peace and blessings be upon him) said, "If he is (i.e., the Dajjal), you will not be able to kill him, and if he is not (the Dajjal), then it is not better for you to kill him." Sayyiduna Salim bin Abdullah (may Allah be pleased with him) said, "I heard Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) say that after this, the Messenger of Allah (peace and blessings be upon him) and Sayyiduna Ibn Abi bin Ka'b (may Allah be pleased with him) went to the garden where Ibn Sayyad lived. When the Prophet (peace and blessings be upon him) entered the garden, he began to hide behind the date-palm trees so that he could deceive Ibn Sayyad and listen to some of his words. Before Ibn Sayyad could see him, the Messenger of Allah (peace and blessings be upon him) saw Ibn Sayyad lying on a bed, murmuring some unintelligible words. The Prophet (peace and blessings be upon him) remained hidden among the date-palm trees, but his mother saw the Prophet (peace and blessings be upon him) and called out to him, 'O Saf!' (Saf was the name of Ibn Sayyad.) 'Here comes Muhammad (peace and blessings be upon him).' Hearing this, Ibn Sayyad stood up. The Messenger of Allah (peace and blessings be upon him) said, 'If she had left him as he was, his matter would have become clear (we would have listened to his words and known whether he was a soothsayer or a magician).' Salim said that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said, 'Then the Messenger of Allah (peace and blessings be upon him) stood among the people and praised Allah as He deserves, then mentioned the Dajjal and said, "I warn you against him, and there has not been any Prophet except that he warned his people against the Dajjal, even Nuh (peace be upon him) (whose time was very long ago) warned his people against him. But I am telling you something which no Prophet told his people: know that he will be one-eyed, and your Lord, Blessed and Exalted, is not one-eyed." (God forbid, being one-eyed is a defect, and Allah is free from every defect.) Ibn Shihab said that Umar bin Thabit Ansari narrated to me, and some of the companions of the Messenger of Allah (peace and blessings be upon him) narrated to him, that on the day the Messenger of Allah (peace and blessings be upon him) warned the people against the Dajjal, he also said, "Between his two eyes will be written 'Kafir' (disbeliever)" (i.e., the actual letters Ka. Fa. Ra. will be written, or disbelief and wickedness will be apparent from his face), which every person who dislikes his actions will read, or every believer will read. And the Prophet (peace and blessings be upon him) said, "Know that none of you will see his Lord before he dies."