Sahih Bukhari Volume 004, Book 051, Hadith Number 032.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 51. Wills and Testaments (Wasaayaa)
Narated By Anas : When the Prophet ordered that the mosque be built, he said, "O Bani An-Najjar! Suggest to me a price for this garden of yours." They replied, "By Allah! We will demand its price from none but Allah."