A'isha said that a person came to the Messenger of Allah (ﷺ) and said:
My mother died suddenly without having made any will. I think she would have definitely given Sadaqa if she had been able to speak. Would she have a reward if I gave Sadaqa on her behalf? He (the Holy Prophet) said: Yes.
Reference: Sahih Muslim 1004 a In-book : Book 12, Hadith 63 USC-MSA web (English) : Book 5, Hadith 2196 (deprecated)
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