Sahih Bukhari Volume 004, Book 051, Hadith Number 035.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 51. Wills and Testaments (Wasaayaa)
Narated By Anas bin Malik : When Allah's Apostle came to Medina, he ordered that a mosque be built. He said, "O Bani An-Najjar! Suggest me a price for the garden of yours." They replied, "By Allah, we will not ask its price except from Allah."