a woman vowed to perform Hajj but she died. Her brother came to the Prophet and asked him about that, he said: 'Do yhou think that if your sister owed a debt you wouold pay it off?' He said: 'Yes.' He said: 'Then fulfill the right of Allah, for He is more deserving that His rights should be fulfilled.'''  

أَنْ تَحُجَّ فَمَاتَتْ فَأَتَى أَخُوهَا النَّبِيَّ ﷺ فَسَأَلَهُ عَنْ ذَلِكَ فَقَالَ أَرَأَيْتَ لَوْ كَانَ عَلَى أُخْتِكَ دَيْنٌ أَكُنْتَ قَاضِيَهُ قَالَ نَعَمْ قَالَ فَاقْضُوا اللَّهَ فَهُوَ أَحَقُّ بِالْوَفَاءِ