Sahih Muslim Book 10, Hadith Number 3776.

Chapter : It is forbidden for a solvent to make delay in the payment of debt and the desirability of a reference, and it is excellent for the rich man to accept that when reference is made to him.

Jabir (Allah be pleased with him) reported that Allah’s Apostle (may peace be upon him) commanded to make deductions in the payment of that stricken with a Calamity.