**~As the Reminder to Myself~~~*

God states in the Quran about the events of the Day of Judgment:

 Then when the Horn is blown with one blast, and the earth and the mountains are lifted and leveled with one blow [i.e. stroke] - Then on that Day, the Occurrence [i.e. Resurrection] will occur, And the heaven will split [open], for that Day it is infirm (i.e. weak, enfeebled and unstable). And the angels are at its edges. And there will bear the Throne of your Lord above them, that Day, eight [of them]. That Day, you will be exhibited [for judgment]; not hidden among you is anything concealed (i.e. any person or any secret you might attempt to conceal). So as for he who is given his record in his right hand, he will say, “Here, read my record! Indeed, I was certain that I would be meeting my account.” So he will be in a pleasant life - In an elevated Garden, Its [fruit] to be picked hanging near. [They will be told], “Eat and drink in satisfaction for what you put forth (i.e. literally, advanced in anticipation of reward in the Hereafter) in the days past.” But as for he who is given his record in his left hand, he will say, “Oh, I wish I had not been given my record, and had not known what is my account. I wish it [i.e. my death] had been the decisive one (i.e. ending life rather than being the gateway to eternal life). My wealth has not availed me. Gone from me is my authority.” [God will say], “Seize him and shackle him. Then into Hellfire drive him. Then into a chain whose length is seventy cubits insert him.” Indeed, he did not used to believe in God, the Most Great.  (Quran, 69:13-33)

The Prophet Muhammad  taught that three things continue to benefit a [believing] person even after death - charity which he had given (which continues to benefit others), beneficial knowledge which he had left behind (i.e. authored or taught), and supplication on his behalf by a righteous child (Narrated by Saheeh Muslim).