It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) 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." (PT)
English reference (PT): Vol. 3, Book 15, Hadith 2403 (PT)
Arabic reference (PT): Book 15, Hadith 2495 (PT)