The Prophet ﷺ said, "Among the gravest sins with which a servant can meet Allah , after the major sins that have been forbidden, is that a man dies leaving behind a debt with no means of repayment."
حدثنا عبد الله بن يزيد حدثنا سعيد بن أبي أيوب قال سمعت رجلا من قريش يقال له أبو عبد الله كان يجالس جعفر بن ربيعة قال سمعت
عن النبي ﷺ قال إن أعظم الذنوب عند الله عز وجل أن يلقاه عبد بها بعد الكبائر التي نهى عنها أن يموت الرجل وعليه دين لا يدع قضاء
Its chain is daif, because the man who narrated from Abu Burda is unknown.Abu Dawud narrated the hadith 3/637, no. 3342, and it is sahih according to him, and he likewise said so in Targheeb 2/605, and likewise Hakim 2/182, and Dhahabi agreed with him.