What beneficial act can a person do for a deceased loved one, according to the teachings of Prophet Muhammad (saw)?
 Narrated Ibn `Abbas:                     That the mother of Sa`d bin Ubada the brother of Bani Saida died in Sa`d's absence, so he came to the Prophet saying, "O Allah's Apostle! My mother died in my absence, will it benefit her if I give in charity on her behalf?" The Prophet said, "Yes." Sa`d said, "I take you as my witness that I give my garden Al-Makhraf in charity on her behalf."