A man came to the Prophet ﷺ demanding repayment of a camel he was owed. The Messenger of Allah ﷺ said, "Give it to him."They replied, "We can only find one of a better age than his."The man said, "You have repaid me in full, may Allah repay you in full."The Messenger of Allah ﷺ said, "Give it to him, for the best of people are those who repay their debts in the best manner."
أن رجلا أتى النبي ﷺ يتقاضاه بعيرا، قال: فقال رسول الله ﷺ: أعطوه. فقالوا: لا نجد إلا سنا أفضل من سنه. فقال الرجل: أوفيتني أوفاك الله. فقال رسول الله ﷺ: أعطوه؛ فإن من خيار الناس أحسنهم قضاء.
Bukhari narrated it in the Book of Borrowing (2392), and Muslim in the Book of Sharecropping (1601:122), via Sufyan, who said, "Salama bin Kuhayl narrated to me, from Abu Salama, from Abu Hurairah," and he mentioned it. The wording is Bukhari's.