Sahih Muslim Book 5, Hadith Number 2172.
Chapter : Exhortation to give Sadaqa.
Abu Huraira reported that the Prophet (may peace be upon him) said: Nothing is more delighting to me than this that Uhud should be of gold for me, and no dinar is left with me out of it before three nights pass except a dinar which I would set aside for the repayment of debt upon me.