(16) باب الْفِتْنَةِ مِنَ الْمَشْرِقِ مِنْ حَيْثُ يَطْلُعُ قَرْنَا الشَّيْطَانِ
Ibn Umar reported:
I heard Allah's Messenger (ﷺ) as saying while pointing his hands towards the east: The turmoil would appear from this side; verily, the turmoil would appear from this side (he repeated it thrice) where appear the horns of Satan.
Reference: Sahih Muslim 2905 e
In-book reference: Book 54, Hadith 62
USC-MSA web (English) reference(deprecated numbering scheme): Book 41, Hadith 6942