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." (RU)
English reference (RU): Vol. 3, Book 22, Hadith 2716 (RU)
Arabic reference (RU): Book 22, Hadith 2820 (RU)