Ka'b b. Malik said that in the time of God’s Messenger he made demand in the mosque for payment of a debt due to him from Ibn Abu Hadrad and their voices rose till God’s Messenger, who was in his house, heard them. He went out to them and removing the curtain of his chamber called to Ka'b b. Malik addressing him by name. He replied, “At your service, Messenger of God", whereupon he made a gesture with his hand indicating that he should remit half the debt due to him, and when Ka'b expressed his willingness he told the other to get up and discharge his debt. (Bukhari and Muslim.)