One who dies with a vow left to fulfill Sunan Ibn Majah 2133
Arabic hadith text
حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، حَدَّثَنَا ابْنُ لَهِيعَةَ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، . أَنَّ امْرَأَةً، أَتَتْ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ فَقَالَتْ إِنَّ أُمِّي تُوُفِّيَتْ وَعَلَيْهَا نَذْرُ صِيَامٍ فَتُوُفِّيَتْ قَبْلَ أَنْ تَقْضِيَهُ . فَقَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " لِيَصُمْ عَنْهَا الْوَلِيُّ "
Translation
It was narrated from Jabir bin 'Abdullsh that
a woman came to the Messenger of Allah (ﷺ) and said: "My mother has died, and she had made a vow to fast, but she died before she could fulfill it. The Messenger of Allah (ﷺ) said: 'Let her guardian fast on her behalf ."