The Book of Tribulations and Portents of the Last Hour
وَحَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ وَهُوَ مُسْتَقْبِلُ الْمَشْرِقِ " هَا إِنَّ الْفِتْنَةَ هَا هُنَا هَا إِنَّ الْفِتْنَةَ هَا هُنَا هَا إِنَّ الْفِتْنَةَ هَا هُنَا مِنْ حَيْثُ يَطْلُعُ قَرْنُ الشَّيْطَانِ " .Salim b. Abdullah reported on the authority of his father that Allah's Messenger (ﷺ), while turning his face towards the east, said:The turmoil would appear from this side; verily, the turmoil would appear from this side; verily, the turmoil would appear from this side - the side where appear the horns of Satan
From Sahih Muslim, whose reports the scholars accept as authentic.