كَي

كَىْ نُسَبِّحَكَ كَثِيرًۭا

That we may exalt You much

لِّكَيْلَا تَأْسَوْا۟ عَلَىٰ مَا فَاتَكُمْ وَلَا تَفْرَحُوا۟ بِمَآ ءَاتَىٰكُمْ ۗ وَٱللَّهُ لَا يُحِبُّ كُلَّ مُخْتَالٍۢ فَخُورٍ

In order that you not despair over what has eluded you and not exult [in pride] over what He has given you. And Allāh does not like everyone self-deluded and boastful -

فَرَدَدْنَـٰهُ إِلَىٰٓ أُمِّهِۦ كَىْ تَقَرَّ عَيْنُهَا وَلَا تَحْزَنَ وَلِتَعْلَمَ أَنَّ وَعْدَ ٱللَّهِ حَقٌّۭ وَلَـٰكِنَّ أَكْثَرَهُمْ لَا يَعْلَمُونَ

So We restored him to his mother that she might be content and not grieve and that she would know that the promise of Allāh is true. But most of them [i.e., the people] do not know.