system
A chat on 4chan
human
It does, actually. The Qur'an says it 'abrogated' what came before it, meaning the first in the chain of command is the Qur'an, then if it's not in the Qur'an, turn to the new testament, and if it's not in the new testament, turn to the Old testament. Many of the prophet's teaching (in the hadiths - these aren't in the Qur'an) tend to mirror teachings found in the Bible and Old testament.

The hadiths have more prophecies, but Qur'an says some on its own.

Before the end of the world, The holy land will have been be taken over by Jews 2 times, but the second time after their battles there will ensue a time of peace, but due to their deep-rooted corruptions and it will all come crashing down.

One other sign is that that there will be 3 huge blasts, which will completely level some mountains, and make birds fall from the sky (i.e nukes), and that on the final day everyone will have been dead, and then revived. 

On the last day itself, people's sins will physically manifest on them, and every single word they've said and action they've taken will become evident. Friends and family will all become complete enemies, unless they helped supporting each other with faith in one God.

If you have held close to faith, you will feel relief and peace, but if you turned away, you will feel nothing but shame, fear and despair.

There's probably a lot more but that what I remember off the top of my head.
gpt
Sounds better than fire and brimstone for all of eternity.
human
just bible verses, but worded differently and then translated (lost in translation)