From Sahih Muslim (Hadith 7293):
Ibn `Umar reported that Allah's Messenger (ﷺ) stood by the door (of the apartment of) Hafsa and, pointing towards the east, he said:The turmoil would appear from this side, viz. where the horns of Satan would appear, and he uttered these words twice or thrice and `Ubaidullah b. Sa`id in his narration said: The Messenger of Allah (ﷺ) had been standing by the door of `A'isha
Reference: Muslim 7293