89:27-30
يَا أَيَّتُهَا النَّفْسُ الْمُطْمَئِنَّةُ ارْجِعِي إِلَىٰ رَبِّكِ رَاضِيَةً مَّرْضِيَّةً
“O tranquil soul, return to your Lord, well-pleased and pleasing to Him.”
One of the most beloved verses of the Quran, describing the blessed state of the righteous soul at death and on the Day of Judgement – mutual contentment between the servant and Allah.
89:15-16
فَأَمَّا الْإِنسَانُ إِذَا مَا ابْتَلَاهُ رَبُّهُ فَأَكْرَمَهُ وَنَعَّمَهُ فَيَقُولُ رَبِّي أَكْرَمَنِ
“As for man, when his Lord tries him and is generous to him and favours him, he says, "My Lord has honoured me."”
The surah diagnoses a core human delusion: measuring divine love by worldly gain and loss, rather than by true guidance and righteousness.