Sahih Muslim Book 10, Hadith Number 3793.

Chapter : Command of killing dogs and then its abrogation, and prohibition of keeping them but for hunting and protection of lands or cattle or like that.

Abu Huraira (Allah be pleased with him) reported Allah’s Messenger (may peace be upon him) as saying: There was a person who gave loans to the people and said to his men: When an insolvent comes to you show him leniency that Allah may overlook our (faults). So when he met Allah, He overlooked his faults (forgave him).