عَنْ أَبِي هُرَيْرَةَ رضى الله عنه
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«مَطْلُ اَلْغَنِيِّ ظُلْمٌ، وَإِذَا أُتْبِعُ أَحَدُكُمْ عَلَى مَلِيٍّ فَلْيَتْبَعْ»
The Messenger of Allah (sallallahu alayhi wa sallam) said: “Delay in payment by a rich man is injustice. So, if one of you is referred for payment to a wealthy man he should accept the reference.”.
Bulugh al-Maram 1007, Book 7, Business Transactions, Hadith 118. 1 min read