Sahih Muslim
The Book of Bequests (Kitab Al-Wasiyya)
Book Number: 013 / Hadith Number: 4011
A'isha reported: Allah's Messenger (may peace be upon him) left neither dinar nor dirham (wealth in the form of cash), nor goats (and sheep), nor camels. And he made no will about anything (in regard to his material possessions, as he had none),