It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The soul of the believer remains suspended because of his debt until it is paid off on his behalf."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب التفليس / 11267
Sayyiduna Samurah (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) led the funeral prayer over a deceased person. When he had finished, he asked: "Is anyone from the family of so-and-so here?" He (peace and blessings be upon him) repeated this several times. He said: A man stood up who had been sitting behind all the people, and he came dragging his lower garment. He (peace and blessings be upon him) said to him: "I mentioned your name only for something good. Listen! So-and-so, a man from among them, is held captive because of his debt. If you see his family or those who look after his affairs, (tell them to) pay off his debt."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب التفليس / 11268