Hadith 1611
Abu Hurairah (May Allah be pleased with him) said:
وعن أبي هريرة رضي الله عنه أن رسول الله صلى الله عليه وسلم قال: "مطل الغني ظلم وإذا أُتبع أحدكم على مليء فليتبع" ((متفق عليه. معنى "أتبع": أحيل)).
The Messenger of Allah (ﷺ) said, "It is an act of oppression on the part of a person to procrastinate in fulfilling his obligation; if the repayment of a debt due to any of you is undertaken by a rich person, you should agree to the substitution." [Al-Bukhari and Muslim].
In plain words
For someone who can afford to repay a debt to keep delaying is a form of injustice; and if a solvent person offers to take over a debt owed to you, accept it. Pay promptly when you can, and receive a sound settlement gracefully.
Reference : Riyad as-Salihin 1611 In-book reference : Book 17, Hadith 101