Making up fasts on behalf of the deceased
وَحَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا عِيسَى بْنُ يُونُسَ، حَدَّثَنَا الأَعْمَشُ، عَنْ مُسْلِمٍ، الْبَطِينِ عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، - رضى الله عنهما - أَنَّ امْرَأَةً، أَتَتْ رَسُولَ اللَّهِ صلى الله عليه وسلم فَقَالَتْ إِنَّ أُمِّي مَاتَتْ وَعَلَيْهَا صَوْمُ شَهْرٍ . فَقَالَ " أَرَأَيْتِ لَوْ كَانَ عَلَيْهَا دَيْنٌ أَكُنْتِ تَقْضِينَهُ " . قَالَتْ نَعَمْ . قَالَ " فَدَيْنُ اللَّهِ أَحَقُّ بِالْقَضَاءِ " .
Ibn 'Abbas (Allah be pleased with both of them) reported: A woman came to the Messenger of Allah (ﷺ) and said: My mother has died, and fasts of a month are due from her. Thereupon he said: Don't you see that if debt was due from her, would you not pay it? She said: Yes (I would pay on her behalf). Thereupon he said: The debt of Allah deserves its payment more than (the payment of anyone else).