﴿ فَرَدَدْنَٰهُ إِلَىٰٓ أُمِّهِۦ كَىْ تَقَرَّ عَيْنُهَا وَلَا تَحْزَنَ وَلِتَعْلَمَ أَنَّ وَعْدَ ٱللَّهِ حَقٌّۭ وَلَٰكِنَّ أَكْثَرَهُمْ لَا يَعْلَمُونَ ﴾

“And thus We restored him to his mother, so that her eye might he gladdened, and that she might grieve no longer, and that she might know that God’s promise always comes true - even though most of them know it not!”

(So We restored him to his mother that she might be comforted) by having Moses (and not grieve) over him, (and that she might know that the promise of Allah) to bring him back to her (is true. But most of them) the people of Egypt (know not) this nor believe in it.