Sahih al-Bukhari 3104
Sahih al-Bukhari · Book 57: One-fifth of Booty to the Cause of Allah (Khumus) · What has been said regarding the houses of the wives of the Prophet ﷺ and that which were named after them of the houses (e.g., ‘Aishah’s house)
Narrated `Abdullah:
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ ، حَدَّثَنَا جُوَيْرِيَةُ ، عَنْ نَافِعٍ ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ قَالَ قَامَ النَّبِيُّ صلى الله عليه وسلم خَطِيبًا فَأَشَارَ نَحْوَ مَسْكَنِ عَائِشَةَ فَقَالَ " هُنَا الْفِتْنَةُ ـ ثَلاَثًا ـ مِنْ حَيْثُ يَطْلُعُ قَرْنُ الشَّيْطَانِ " .
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).