وَأَمَّا ٱلْغُلَـٰمُ فَكَانَ أَبَوَاهُ مُؤْمِنَيْنِ فَخَشِينَآ أَن يُرْهِقَهُمَا طُغْيَـٰنًا وَكُفْرًا
Wa aammal ghulaamu fakaana abawaahu mu'minaini fakhasheenaaa any yurhiqa humaa tughyaananw wa kufraa
The young boy had parents who were people of faith, and so, fearing he would trouble them through wickedness and disbelief,
As for the boy, his parents were believers, and we feared he would burden them with tyranny and ingratitude.