Sunan Ibn Majah, Hadith 2403 ⓘ
It was narrated from Abu Hurairah that 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 collect a debt), he should accept that referral.”
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الظُّلْمُ مَطْلُ الْغَنِيِّ وَإِذَا أُتْبِعَ أَحَدُكُمْ عَلَى مَلِيءٍ فَلْيَتْبَعْ " .
also referenced under: Book 15, Hadith 2495 (In-Book) & Volume 3, Book 15, Hadith 2403 (DarusSalam)