Sahih al-Bukhari — Transferance of a Debt from One Person to Another (Al-Hawaala) — Hadith No: 2288
Translation
Narrated Abu Huraira:The Prophet (ﷺ) said, "Procrastination (delay) in paying debts by a wealthy person is injustice. So, if your debt is transferred from your debtor to a rich debtor, you should agree