Jabir bin Abdullah reported,

A Jewish woman in Madinah gave birth to a boy whose eye was wiped out, raised, and protruding. The Messenger of Allah ﷺ feared that he might be the Dajjal, so he went looking for him and found him under a velvet cloak murmuring to himself. His mother noticed the Prophet's arrival and said, "Abdullah, this is Abu Qasim who has come. Come out to him."The boy emerged from under the cloak, and the Messenger of Allah ﷺ said, "What is wrong with her, may Allah destroy her. Had she left him alone, he would have made things clear."Then he said, "Ibn Sayyad, what do you see?"He replied, "I see truth and I see falsehood, and I see a throne upon the water."He spoke ambiguously to him. The Prophet asked, "Do you bear witness that I am the Messenger of Allah?"The boy responded, "Do you bear witness that I am the Messenger of Allah?"The Messenger of Allah said, "I believe in Allah and His messengers." Then he left him and went away.Then he came to him another time and found him among some palm trees of his, murmuring. His mother noticed him and said, "Abdullah, this is Abu Qasim who has come."The Messenger of Allah ﷺ said, "What is wrong with her, may Allah destroy her. Had she left him alone, he would have made things clear."The Messenger of Allah ﷺ was hoping to hear something from his speech to determine whether he was the Dajjal or not. He said, "Ibn Sayyad, what do you see?"He replied, "I see truth and I see falsehood, and I see a throne upon the water."He asked, "Do you bear witness that I am the Messenger of Allah?"The boy responded, "Do you bear witness that I am the Messenger of Allah?"The Messenger of Allah ﷺ said, "I believe in Allah and His messengers." The boy spoke ambiguously to him, so he left and went away.Then he came a third or fourth time, and with him were Abu Bakr and Umar bin Khattab along with a group of the Muhajirun and the Ansar, and I was with him. The Messenger of Allah ﷺ hurried ahead of us hoping to hear something from his speech, but his mother got to him first and said, "Abdullah, this is Abu Qasim who has come."The Messenger of Allah ﷺ said, "What is wrong with her, may Allah destroy her. Had she left him alone, he would have made things clear."He said, "Ibn Sayyad, what do you see?"He replied, "I see truth and I see falsehood, and I see a throne upon the water."He asked, "Do you bear witness that I am the Messenger of Allah?"The boy responded, "Do you bear witness that I am the Messenger of Allah?"The Messenger of Allah ﷺ said, "I believe in Allah and His messengers." The boy spoke ambiguously to him.The Messenger of Allah ﷺ then said to him, "Ibn Sayyad, I have hidden something from you. What is it?"He said, "Dukh, dukh."The Messenger of Allah ﷺ said to him, "Be off, be off."Umar bin Khattab said, "Allow me to kill him, Messenger of Allah."The Messenger of Allah ﷺ said, "If he is the one, you are not the one to deal with him. The one to deal with him is Isa son of Maryam ﷺ. And if he is not the one, then you have no right to kill a man under a covenant of protection."The Messenger of Allah ﷺ continued to fear that he was the Dajjal.

عن جابر بن عبد الله أنه قال

إن امرأة من اليهود بالمدينة ولدت غلاما ممسوحة عينه، طالعة ناتئة، فأشفق رسول الله ﷺ أن يكون الدجال، فوجده تحت قطيفة يهمهم، فآذنته أمه، فقالت: يا عبد الله، هذا أبو القاسم قد جاء، فاخرج إليه، فخرج من القطيفة، فقال رسول الله ﷺ: ما لها قاتلها الله، لو تركته لبين ثم قال: يا ابن صائد، ما ترى؟ قال: أرى حقا وأرى باطلا، وأرى عرشا على الماء، قال: فلبس عليه، قال: أتشهد أني رسول الله؟ فقال هو: أتشهد أني رسول الله؟ فقال رسول الله: آمنت بالله، ورسله ثم خرج، وتركه. ثم أتاه مرة أخرى، فوجده في نخل له يهمهم، فآذنته أمه، فقالت: يا عبد الله هذا أبو القاسم قد جاء، فقال رسول الله ﷺ: ما لها قاتلها الله، لو تركته لبين قال: فكان رسول الله ﷺ يطمع أن يسمع من كلامه شيئا، فعلم هو هو أم لا، قال: يا ابن صائد ما ترى؟ قال: أرى حقا وأرى باطلا، وأرى عرشا على الماء، قال: أتشهد أني رسول الله؟ قال هو: أتشهد أني رسول الله؟ فقال رسول الله ﷺ: آمنت بالله ورسله، فلبس عليه، ثم خرج فتركه. ثم جاء في الثالثة أو الرابعة، ومعه أبو بكر وعمر بن الخطاب في نفر من المهاجرين والأنصار، وأنا معه، قال: فبادر رسول الله ﷺ بين أيدينا رجاء أن يسمع من كلامه شيئا، فسبقته أمه إليه، فقالت: يا عبد الله هذا أبو القاسم قد جاء، فقال رسول الله ﷺ: ما لها قاتلها الله لو تركته لبين، فقال: يا ابن صائد ما ترى؟ قال: أرى حقا وأرى باطلا وأرى عرشا على الماء، قال: أتشهد أني رسول الله؟ قال: أتشهد أنت أني رسول الله؟ فقال رسول الله ﷺ: آمنت بالله ورسله، فلبس عليه، فقال له رسول الله ﷺ: يا ابن صائد، إنا قد خبأنا لك خبئا، فما هو؟ قال: الدخ الدخ، فقال له رسول الله ﷺ: اخسأ اخسأ فقال عمر بن الخطاب: ائذن لي فأقتله يا رسول الله، فقال رسول الله ﷺ: إن يكن هو فلست صاحبه، إنما صاحبه عيسى ابن مريم ﷺ، وإن لا يكن هو فليس لك أن تقتل رجلا من أهل العهد قال: فلم يزل رسول الله ﷺ مشفقا أنه الدجال.