It was narrated from 'Amr bin Huraith that Abu Bakr as-Siddeeq recovered from a sickness and went out to the people. He apologised for something and said: We did not intend anything but good. Then he said: The Messenger of Allah (ﷺ) told us: `The Dajjal will emerge from a land in the East called Khurasan and he will be followed by people with faces like hammered shields.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا رَوْحٌ، قَالَ حَدَّثَنَا سَعِيدُ بْنُ أَبِي عَرُوبَةَ، عَنْ أَبِي التَّيَّاحِ، عَنِ الْمُغِيرَةِ بْنِ سُبَيْعٍ، عَنْ عَمْرِو بْنِ حُرَيْثٍ، أَنَّ أَبَا بَكْرٍ الصِّدِّيقَ، رَضِيَ اللَّهُ عَنْهُ أَفَاقَ مِنْ مَرْضَةٍ لَهُ فَخَرَجَ إِلَى النَّاسِ فَاعْتَذَرَ بِشَيْءٍ وَقَالَ مَا أَرَدْنَا إِلَّا الْخَيْرَ ثُمَّ قَالَ حَدَّثَنَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّ الدَّجَّالَ يَخْرُجُ مِنْ أَرْضٍ بِالْمَشْرِقِ يُقَالُ لَهَا خُرَاسَانُ يَتْبَعُهُ أَقْوَامٌ كَأَنَّ وُجُوهَهُمْ الْمَجَانُّ الْمُطْرَقَةُ.
sunnah.com