Musnad Ahmed: Hadith 2707

"By the One in Whose hand is my soul, I would not like Uhud to be turned into gold for the family of Muhammad and I spend it for the sake of Allah, and leave behind two dinars of it the day I die, except two dinars that I set aside to pay off debts, if there are any.” Then he died, and he did not leave behind any dinars or dirhams, or any slaves, male or female; and he left behind his shield which was being held in pledge by a Jewish man for thirty sa's of barley.