It is narrated from Hazrat Abu Rafi’ (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) took a camel on loan from a Bedouin. The Bedouin came to the Prophet (peace be upon him) to demand his camel. The Prophet (peace be upon him) said to the companions: “Find a camel of the same age as his and bring it.” The companions (may Allah be pleased with them) searched but could not find a camel of the required age; every camel was older than that. The Prophet (peace be upon him) said: “Then give him an older camel. The best among you is the one who is best in repaying debts.”
Hadith Referenceمسند احمد / من مسند القبائل / 27181