رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 948
The Book of Visiting the Sick
Charity on behalf of the Deceased and Praying for him
وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا أَنَّ رَجُلاً قَالَ لِلنَّبِيِّ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ : إِنَّ أُمِّي افْتُلِتَتْ نَفْسَهَا وَأُرَاهَا لَوْ تَكَلَّمَتْ، تَصَدَّقَتْ، فَهَلْ لَهَا أَجْرٌ إِنْ تَصَدَّقْتُ عَنْهَا؟ قَالَ: نَعَمْ ((مُتَّفَقٌ عَلَيْهِ))
'Aishah (May Allah be pleased with her) reported: A man said to the Prophet (ﷺ): "My mother has died suddenly. I think that if she were able to talk (alive) she would have given in Sadaqah (charity). So, if I give Sadaqah now on her behalf, will she get the reward?" The Messenger of Allah (ﷺ) said, "Yes (she will be rewarded for that)." [Al-Bukhari and Muslim].
Riyad as-Salihin, 948