Sahih Muslim Book 13, Hadith Number 4008.
Chapter : Waqf.
‘Umar reported: I acquired land from the lands of Khaibar. I came to Allah’s Messenger (may peace be upon him) and said: I have acquired a piece of land. Never have I acquired land more loved by me and more cherished by me than this. The rest of the hadith is the same, but he made no mention of this: “I narrated it to Muhammad” and what follows.