Musnad Ahmad 30:2901

'Abd al-Rahman narrated to us, he said: Hammad narrated to us, from Muhammad ibn Ziyad, he said: I heard Abu Hurayrah saying: I heard Abu al-Qasim, may Allah bless him and grant him peace, saying: "It would not please me to have the equivalent of Mount Uhud in gold, such that three days pass over me while I have a dinar of it remaining, except for something I set aside for a debt."