Sahih Muslim | Book 13 | Chapter 3

Narrated by Abu Huraira (Allah be pleased with him)
Abu Huraira (Allah be pleased with him) reported that a person said to Allah's Apostle (may peace be upon him): My father died and left behind property without making any will regarding it. Would he be relieved of the burden of his sing if I give sadaqa on his behalf? He (the Holy Prophet) said: Yea.

Narrated by 'Aisha (Allah be pleased with her)
'Aisha (Allah be pleased with her) reported that a man said to Allah's Apostle (may peace be upon him): My mother died all of a sudden, and I think if she (could have the opportunity) to speak she would have (made a will) regarding Sadaqa'. Will I be entitled to reward if I give charity on her behalf? He (the Holy Prophet) said: Yes.

Narrated by 'Aisha (Allah be pleased with her)
'Aisha (Allah be pleased with her) reported that a man came to Allah's Apostle (may peace be upon him) and said: Allah's Messenger, my mother died all of a sudden without making any will. I think if (she could have the opportunity) to speak she would have made a Sadaqa. Would there be any reward for her if I give charity on her behalf? He (the Holy Prophet) said: Yes.

Narrated by Hisham b. 'Urwa
This hadith has been narrated on the authority of Hisham b. 'Urwa with the same chain of transmitters.