Sahih Muslim Book 7, Hadith Number 3170.

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 when the people saw the first fruit (of the season or of plantation) they brought it to Allah’s Apostle (may peace be upon him). When he received it he said: O Allah, bless us in our fruits; and bless us in our city; and bless us in our sa’s and bless us in our mudd. O Allah, Ibrahim was Thy servant, Thy friend, and Thy apostle; and I am Thy servant and Thy apostle. He (Ibrahim) made supplication to Thee for (the showering of blessings upon) Mecca, and I am making supplication to Thee for Medina just as he made supplication to Thee for Mecca, and the like of it in addition. He would then call to him the youngest child and give him these fruits.