﴿ وَأَمَّا ٱلْغُلَٰمُ فَكَانَ أَبَوَاهُ مُؤْمِنَيْنِ فَخَشِينَآ أَن يُرْهِقَهُمَا طُغْيَٰنًۭا وَكُفْرًۭا ﴾

“"And as for that young man, his parents were [true] believers - whereas we had every reason to fear that he would bring bitter grief upon them by [his] overweening wickedness and denial of all truth:”

The opening sentence of verse 80: وَأَمَّا الْغُلَامُ (As for the boy) means the boy who was killed by al-Khadir (علیہ السلام) . The reality behind it, as stated by him, was that the boy was cut out for infidelity and rebellion against parents. But, his parents were pious people. Al-Khadir (علیہ السلام) said that they apprehended that, once this boy grew up, he would harass his parents and cause them pain. And when he took to infidelity as a young man, he would not only become a live trial for the parents but would also endanger the very faith of his parents because of their love for him.