So We restored him to his mother that she might be content and not grieve and that she would know that the promise of Allah is true. But most of the people do not know.
English Transliteration
Faradadnahu ila ommihi kay taqarra AAaynuha wala tahzana walitaAAlama anna waAAda Allahi haqqun walakinna aktharahum la yaAAlamoona
Tafsir of Verse 13
So We returned him to his mother, that she might be comforted and not sorrow, and that she might know that the promise of God is true; but most of them do not know.
Thus did We restore him to his mother, that her eye might be comforted, that she might not grieve, and that she might know that the promise of Allah is true: but most of them do not understand.