Hadith 943
Abu Hurairah (May Allah be pleased with him) reported:
عن أبي هريرة رضي الله عنه، عن النبي صلى الله عليه وسلمى الله عليه وسلم الله عليه وسلم الله عليه وسلم قال: "نفس المؤمن معلقة بدينه حتي يقضي عنه" ((رواه الترمذي وقال: حديث حسن)).
The Prophet (ﷺ) said, "The soul of the deceased believer remains pending on account of the debt till it (the debt) is repayed." [At-Tirmidhi].
In plain words
The Prophet taught that a believer's soul remains held back on account of an unpaid debt until that debt is settled, urging the living to clear it.
Reference : Riyad as-Salihin 943 In-book reference : Book 6, Hadith 50