(7) بَاب تَحْرِيمِ مَطْلِ الْغَنِيِّ وَصِحَّةِ الْحَوَالَةِ وَاسْتِحْبَابِ قَبُولِهَا إِذَا أُحِيلَ عَلَى مَلِيٍّ
Abu Huraira (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:
Delay (in the payment of debt) on the part of a rich man is injustice, and when one of you is retired to a rich man, he should follow him.
Reference: Sahih Muslim 1564 a
In-book reference: Book 22, Hadith 41
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3796