Sayyidina Abu Rafi the freed man of Allah’s Messenger narrated: Allah’s Messenger (SAW) borrrowed a young camel. Afterwards, when he received some camels of zakah, he commanded me to repay the man his young camel. So, I told him that I could not find a camel except one with four teeth, better than the man’s. He said, “Give it to him, for, the best of men is he who repays his debt in the best manner.”
[Muslim 1600, Abu Dawud 3346, Nisai 4617, Ibn e Majah 2285]