Surah Al-Kahf — Ayah 81 (18:81)
فَأَرَدۡنَآ أَن يُبۡدِلَهُمَا رَبُّهُمَا خَيۡرٗا مِّنۡهُ زَكَوٰةٗ وَأَقۡرَبَ رُحۡمٗا ٨١
English translation (Saheeh International)
So we intended that their Lord should substitute for them one better than him in purity and nearer to mercy.
Brief commentary
So I wanted Allah to replace them with a child better than him in religion, piety and purity from sins, and more merciful to his parents.