Sahih Muslim Book 10, Hadith Number 3795.

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.

Abdullah b. Abu Qatida reported that Abu Qatada (Allah be pleased with him) demanded (the payment of his debt) from his debtor but he disappeared; later on he found him and he said: I am hard up financially, whereupon he said: (Do you state it) by God? He said: By God. Upon this he (Qatada) said: I heard Allah’s Messenger (may peace be upon him) as saying: He who loves that Allah saves him from the torments of the Day of Resurrection should give respite to the insolvent or remit (his debt) This hadith has been narrated on the authority of Ayyub with the same chain of transmitters.