"The Messenger of Allah said: 'Wrongdoing is when a rich man takes a long time to repay a debt, and if one of you is referred to a rich man (to help repay debt), he should accept that referral."'  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَطْلُ الْغَنِيِّ ظُلْمٌ وَإِذَا أُتْبِعَ أَحَدُكُمْ عَلَى مَلِيءٍ فَلْيَتْبَعْ