Sahih Muslim
The Book of Pilgrimage (Kitab Al-Hajj)
Book Number: 007 / Hadith Number: 3195
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: He who intends to do harm to its people (he meant Medina), Allah would efface him as salt is dissolved in water. Ibn Hatim (one of the narrators) substituted the word" harm" for" mischief".