It would be from this side that there would appear the height of unbelief, viz. where appear the horns of Satan, i.e. the east.  

خَرَجَ رَسُولُ اللَّهِ ﷺ مِنْ بَيْتِ عَائِشَةَ فَقَالَ رَأْسُ الْكُفْرِ مِنْ هَا هُنَا مِنْ حَيْثُ يَطْلُعُ قَرْنُ الشَّيْطَانِ يَعْنِي الْمَشْرِقَ  

[Machine] Indeed, the Messenger of Allah ﷺ stood up to deliver a sermon and said, "Indeed, the turmoil is here, from where the horn of Satan rises, meaning the east."  

أَنَّ رَسُولَ اللهِ ﷺ قَامَ يَخْطُبُ فَقَالَ أَلَا وَإِنَّ الْفِتْنَةَ هَاهُنَا مِنْ حَيْثُ يَطْلُعُ قَرْنُ الشَّيْطَانِ يَعْنِي الْمَشْرِقَ  

It would be from this side that there would appear the height of unbelief, viz. where appear the horns of Satan, i.e. the east. (Using translation from Muslim 2905d)  

خَرَجَ رَسُولُ اللهِ ﷺ مِنْ بَيْتِ عَائِشَةَ فَقَالَ رَأْسُ الْكُفْرِ مِنْ هَاهُنَا مِنْ حَيْثُ يَطْلُعُ قَرْنُ الشَّيْطَانِ