It was narrated from Abu Hurairah that a man asked the Messenger of Allah (ﷺ):
"My father died and left behind wealth, but he did not make a will. Will it expiate for him if I give charity on his behalf?" He said: "Yes." (DE)
English reference (DE): Vol. 3, Book 22, Hadith 2716 (DE)
Arabic reference (DE): Book 22, Hadith 2820 (DE)