وَأَمَّا الْغُلَامُ فَكَانَ أَبَوَاهُ مُؤْمِنَيْنِ فَخَشِينَا أَن يُرْهِقَهُمَا طُغْيَانًا وَكُفْرًا

As for the boy, his parents were faithful [persons], and We feared he would overwhelm them with rebellion and unfaith.