Sahih Bukhari | Volume 3 | Hadith Number 647

Narrated by Usama bin Zaid
Once the Prophet stood at the top of one of the castles (or higher buildings) of Medina

and said, "Do you see what I see? No doubt I am seeing the spots of afflictions amongst your houses as numerous as the spots where rain-drops fall (during a heavy rain). (See Hadith No. 102)