Satan's grudge against humans

اعوذ بالله من الشيطن الرجيم

Surah 17. Al-Isra, Verse 62:

قَالَ أَرَأَيْتَكَ هَٰذَا الَّذِي كَرَّمْتَ عَلَيَّ لَئِنْ أَخَّرْتَنِ إِلَىٰ يَوْمِ الْقِيَامَةِ لَأَحْتَنِكَنَّ ذُرِّيَّتَهُ إِلَّا قَلِيلًا

Translation:

[Iblis (Satan)] said: "See? This one whom You have honoured above me, if You give me respite (keep me alive) to the Day of Resurrection, I will surely seize and mislead his offspring (by sending them astray) all but a few!"

If you do good you do it for yourself

اعوذ بالله من الشيطن الرجيم

Surah 17. Al-Isra, Verse 7:

إِنْ أَحْسَنتُمْ أَحْسَنتُمْ لِأَنفُسِكُمْ وَإِنْ أَسَأْتُمْ فَلَهَا 

Translation:

(And We said): "If you do good, you do good for your ownselves, and if you do evil (you do it) against yourselves."