The Messenger of Allah ﷺ said, "A wealthy man's delay in paying what he owes is an injustice, and if one of you is referred to a solvent debtor, let him follow it up."
وقال رسول الله ﷺ المطل ظلم الغني وإذا أتبع أحدكم على مليء فليتبع
Its isnad is sahih, and it is a repetition of 7332.