From Sahih Bukhari (Hadith 3104):
Narrated `Abdullah:The Prophet (ﷺ) stood up and delivered a sermon, and pointing to `Aisha's house (i.e. eastwards), he said thrice, "Affliction (will appear from) here," and, "from where the side of the Satan's head comes out (i.e. from the East)
Reference: Bukhari 3104