Sahih Muslim Book 7, Hadith Number 3185.

Chapter : Eminence of Medina, Allah’s Apostle (may peace be upon him) showered blessings upon it. Its sacredness and unlawfulness of hunting and lopping of trees and demarcation its precincts.

Abu Huraira (Allah be pleased with him) reported Allah’s Messenger (may peace be upon him) as saying: None who shows endurance on the hardships of Medina… (the rest of the Hadith is the same).