Volume 4 · Book 52 · Hadith 160
Narrated 'Amr bin Al-Harith: The Prophet did not leave behind him after his death, anything except his arms, his white mule, and a piece of land at Khaibar which he left to be given in charity .
— Sahih Bukhari, Volume 4, Book 52: Fighting for the Cause of Allah (Jihaad), Hadith #160