@Endeavor to know God,
Satan said, "Do You see this one whom You have honored above me? If You delay me until the Day of Resurrection, I will surely destroy his descendants, except for a few."
That bit of the Koran is pretty close to what the the Bible says, But the Bible has it that Satan says 'not a single one' will follow God. He seems to be saying that there is no legitimacy to God's POV and no sentient being would see any lasting value in it.
In contrast, God seems to be saying that he wishes the yield was 100% but he knows it will be 'just a few'. The timeline according to God says that Satan will be detained on the day of resurrection rather than delayed until then. ' Now
' is the time Satan is free to do what he can, not on the day of resurrection. Then after the predicted 1000 years (millennial reign of Christ) on earth, THEN Satan is again released, according to Revelations. Happily, Satan ultimately fails, because even 'a few' that get it, is better than 'not a one'.
What amazes me is that even after 1000 years of being with the Son of God, a large number will still be deceived when Satan is unchained again. God (and Satan) is clearly a hard ass. The question is, is that a bad thing or should God just 'take it easy' on us instead.
My guess is that Satan speaks a brand of truth, but often twists the facts around to suit his goal of 100% ownership of man. He’s pretty good at this game.
Anyway, that’s how the book reads to me. I’m not as well versed on the Koran so I assume you interpreted it correctly.