صَحِيحُ مُسْلِمٍ
Sahih Muslim 1004 c
The Book of Wills
The Reward For Charity Reaches The Deceased
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، أَخْبَرَنِي أَبِي، عَنْ عَائِشَةَ، أَنَّ رَجُلاً، قَالَ لِلنَّبِيِّ صلى الله عليه وسلم إِنَّ أُمِّيَ افْتُلِتَتْ نَفْسُهَا وَإِنِّي أَظُنُّهَا لَوْ تَكَلَّمَتْ تَصَدَّقَتْ فَلِيَ أَجْرٌ أَنْ أَتَصَدَّقَ عَنْهَا قَالَ نَعَمْ .
A'isha (Allah be pleased with her) reported that a man said to Allah's Messenger (ﷺ): My mother died all of a sudden, and I think if she (could have the opportunity) to speak she would have (made a will) regarding Sadaqa'. Will I be entitled to reward if I give charity on her behalf? He (the Prophet) said: Yes.
Sahih Muslim, 1004 cSahihصحيح