(2) باب وُصُولِ ثَوَابِ الصَّدَقَاتِ إِلَى الْمَيِّتِ
Abu Huraira (Allah be pleased with him) reported that a person said to Allah's Apostle (ﷺ):
My father died and left behind property without making any will regarding it. Would he be relieved of the burden of his sins if I give sadaqa on his behalf? He (the Holy Prophet) said: Yes.
Reference: Sahih Muslim 1630
In-book reference: Book 25, Hadith 16
USC-MSA web (English) reference(deprecated numbering scheme): Book 13, Hadith 4001