The rights of Muslims over one another: love, advice, help and enjoining good.
'Aishah (May Allah be pleased with her) reported: A man said to the Prophet (ﷺ): "My mother has died suddenly. I think that if she were able to talk (alive) she would have given in Sadaqah (charity). So, if I give Sadaqah now on her behalf, will she get the reward?" The Messenger of Allah (ﷺ) said, "Yes (she will be rewarded for that)."
Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said, "When a man dies, his deeds come to an end, except for three: A continuous charity, knowledge by which people derive benefit, pious son who prays for him."
About this text. Arabic and English text from the hadith-json project (github.com/AhmedBaset/hadith-json), which collected it from sunnah.com. The project states no licence and the English is a modern translation; it is published here on the site owner's decision. Hadith are numbered in the book's own order.