Bulugh al-Maram #1010

Narrated Abu Hurairah (RA): A man who had died in debt would be brought to Allah's Messenger (ﷺ) and he would ask, "Has he left anything to discharge his debt?" If he was told that he left enough he would pray over him. Otherwise, he would say, "Pray over your companion." Then, when Allah brought the conquests (of other lands) at his hands he said, "I am closer to the believers than their own selves. So, whoever dies leaving a debt, the responsibility for repaying it shall be upon me." .