Sahih al-Bukhari 1878
Sahih al-Bukhari · Book 29: Virtues of Madinah · The high buildings of Al-Madina
Narrated Usama:
حَدَّثَنَا عَلِيٌّ ، حَدَّثَنَا سُفْيَانُ ، حَدَّثَنَا ابْنُ شِهَابٍ ، قَالَ أَخْبَرَنِي عُرْوَةُ ، سَمِعْتُ أُسَامَةَ ـ رضى الله عنه ـ قَالَ أَشْرَفَ النَّبِيُّ صلى الله عليه وسلم عَلَى أُطُمٍ مِنْ آطَامِ الْمَدِينَةِ فَقَالَ " هَلْ تَرَوْنَ مَا أَرَى إِنِّي لأَرَى مَوَاقِعَ الْفِتَنِ خِلاَلَ بُيُوتِكُمْ كَمَوَاقِعِ الْقَطْرِ " . تَابَعَهُ مَعْمَرٌ وَسُلَيْمَانُ بْنُ كَثِيرٍ عَنِ الزُّهْرِيِّ .
Once the Prophet (ﷺ) stood at the top of a (looked out from upon one) castle amongst the castles (or the high buildings) of Medina and said, "Do you see what I see? (No doubt) I see the spots where afflictions will take place among your houses (and these afflictions will be) as numerous as the spots where raindrops fall."