Abu Dawud
Wills
Book Number: 011 / Hadith Number: 2862
Narated By Abu Dharr : The Apostle of Allah (pbuh) said to me: Abu Dharr, I see you weak, and I like for you what I like for myself. Do not be a leader of two (persons), and do not be a guardian of the property of an orphan.
Abu Dawud said: This has been narrated only by the people of Egypt.