Abu Huraira (may Allah be pleased with him) reports that the Prophet (peace and blessings of Allah be upon him) said: "If a debt is referred to a wealthy person, then he should accept it. Delaying repayment by a wealthy person is injustice."
Hadith Referenceالمنتقى ابن الجارود / كتاب البيوع والتجارات / 560