Giving charity on behalf of a deceased mother

A man said to the Prophet ﷺ, “My mother died suddenly, and I think that if she had been able to speak, she would have given charity. Will she have a reward if I give charity on her behalf?” He said: "Yes."

أَنَّ رَجُلاً قَالَ لِلنَّبِيِّ ﷺ: إِنَّ أُمِّي افْتُلِتَتْ نَفْسُهَا، وَأَظُنُّهَا لَوْ تَكَلَّمَتْ تَصَدَّقَتْ، فَهَلْ لَهَا أَجْرٌ إِنْ تَصَدَّقْتُ عَنْهَا؟ قَالَ: «نَعَمْ».

A man said to the Prophet, "My mother died suddenly, and I think that if she could speak, she would have given in charity. May I give in charity on her behalf?" He said, "Yes! Give in charity on her behalf."

لِلنَّبِيِّ ﷺ إِنَّ أُمِّي افْتُلِتَتْ نَفْسَهَا وَأُرَاهَا لَوْ تَكَلَّمَتْ تَصَدَّقَتْ أَفَأَتَصَدَّقُ عَنْهَا قَالَ نَعَمْ تَصَدَّقْ عَنْهَا

When a man dies, his acts come to an end, but three, recurring charity, or knowledge (by which people) benefit, or a pious son, who prays for him (for the deceased).

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِذَا مَاتَ الإِنْسَانُ انْقَطَعَ عَنْهُ عَمَلُهُ إِلاَّ مِنْ ثَلاَثَةٍ إِلاَّ مِنْ صَدَقَةٍ جَارِيَةٍ أَوْ عِلْمٍ يُنْتَفَعُ بِهِ أَوْ وَلَدٍ صَالِحٍ يَدْعُو لَهُ