Sahih Muslim , Book 41, Hadith 6994 (USC-MSA)

Abu Sa'id reported: I accompanied Ibn Sayyad to Mecca and he said to me: What I have gathered from people is that they think that I am Dajjal. Have you not heard Allah's Messenger (may peace upon him) as saying: He will have no children, I said: Yes, of course. Thereupon he said: But I have children. Have you not heard Allah's Messenger as saying: He would not enter Mecca and Medina? I said: Yes, of course. Thereupon he said I have been once in Medina and now I intend to go to Mecca. And he said to me at the end of his talk: By Allah, I know his place of birth his abode where he is just now. He (Abu Sa'id) said: This caused confusion in my mind (in regard to his identity).

حَدَّثَنِي عُبَيْدُ اللَّهِ بْنُ عُمَرَ الْقَوَارِيرِيُّ، وَمُحَمَّدُ بْنُ الْمُثَنَّى، قَالاَ حَدَّثَنَا عَبْدُ الأَعْلَى، حَدَّثَنَا دَاوُدُ، عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ صَحِبْتُ ابْنَ صَائِدٍ إِلَى مَكَّةَ فَقَالَ لِي أَمَا قَدْ لَقِيتُ مِنَ النَّاسِ يَزْعُمُونَ أَنِّي الدَّجَّالُ أَلَسْتَ سَمِعْتَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ إِنَّهُ لاَ يُولَدُ لَهُ ‏"‏ ‏.‏ قَالَ قُلْتُ بَلَى ‏.‏ قَالَ فَقَدْ وُلِدَ لِي ‏.‏ أَوَلَيْسَ سَمِعْتَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ لاَ يَدْخُلُ الْمَدِينَةَ وَلاَ مَكَّةَ ‏"‏ ‏.‏ قُلْتُ بَلَى ‏.‏ قَالَ فَقَدْ وُلِدْتُ بِالْمَدِينَةِ وَهَذَا أَنَا أُرِيدُ مَكَّةَ - قَالَ - ثُمَّ قَالَ لِي فِي آخِرِ قَوْلِهِ أَمَا وَاللَّهِ إِنِّي لأَعْلَمُ مَوْلِدَهُ وَمَكَانَهُ وَأَيْنَ هُوَ ‏.‏ قَالَ فَلَبَسَنِي ‏.‏

sunnah.com