Ahmed bin Manay' أحمد بن منيع · The Book on Zakat

"I herd the Messenger of Allah saying: 'The one who works in collecting charity in truth is like the one who fights in the cause of Allah until he returns.'"

a man said: "O Messenger of Allah! My mother died, will it benefit her if I give charity on her behalf?" He said: 'Yes.' He said: 'I have a Makhraf, so bear witness that I have given it in charity on her behalf.'"