It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "If Mount Uhud were turned into gold for me, it would not please me that three nights should pass while I still had some of it left, except what I had set aside to pay off a debt."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13306