'Aishah (RA):
A man came to the Prophet (ﷺ) and said, "O Allah's Messenger, my mother had died suddenly, and did not make a will. And I think she would have given out Sadaqah if she had been able to speak, so will she get a reward if I gave out Sadaqah on her behalf?" He replied, "Yes."
[Agreed upon; the wording is Muslim's].