Sahih Muslim Book 7, Hadith Number 3171.

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 that Allah’s Messenger (may peace be upon him) was given the first fruit and he said: O Allah, shower blessings upon us in our city, and in our fruits, in our mudd and in our sa’s, blessings upon blessings, and he would then give that to the youngest of the children present there.