The Book of Fasting
13/27. Chapter:
Making up fasts on behalf of the deceased
Sahih Muslim
وَحَدَّثَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، وَابْنُ أَبِي خَلَفٍ، وَعَبْدُ بْنُ حُمَيْدٍ، جَمِيعًا عَنْ زَكَرِيَّاءَ، بْنِ عَدِيٍّ - قَالَ عَبْدٌ حَدَّثَنِي زَكَرِيَّاءُ بْنُ عَدِيٍّ، - أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ عَمْرٍو، عَنْ زَيْدِ، بْنِ أَبِي أُنَيْسَةَ حَدَّثَنَا الْحَكَمُ بْنُ عُتَيْبَةَ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، - رضى الله عنهما - قَالَ جَاءَتِ امْرَأَةٌ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَتْ يَا رَسُولَ اللَّهِ إِنَّ أُمِّي مَاتَتْ وَعَلَيْهَا صَوْمُ نَذْرٍ أَفَأَصُومُ عَنْهَا قَالَ " أَرَأَيْتِ لَوْ كَانَ عَلَى أُمِّكِ دَيْنٌ فَقَضَيْتِيهِ أَكَانَ يُؤَدِّي ذَلِكِ عَنْهَا " . قَالَتْ نَعَمْ . قَالَ " فَصُومِي عَنْ أُمِّكِ " .
Ibn Abbas (Allah be pleased with them) reported: A woman came to the Messenger of Allah (ﷺ) and said: Messenger of Allah, my mother has died and there is due from her a fast of vow; should I fast on her behalf? Thereupon he said: You see that if your mother had died in debt, would it not have been paid on her behalf? She said: Yes. He (the Holy Prophet) said: Then observe fast on behalf of your mother.
Reference : Sahih Muslim 1148dIn-book reference : Book 13, Hadith 202USC-MSA web (English) reference : Book 6, Hadith 2557