Sahih Bukhari
Sahih Bukhari Volume 003, Book 030, Hadith Number 097.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 30. Virtues Of Madina
Narated By Abu Huraira : If I saw deers grazing in Medina, I would not chase them, for Allah's Apostle said, "(Medina) is a sanctuary between its two mountains."