Surah Al-Kahf Verse 74 - English Translation by Ali Unal
Surah Al-Kahfفَٱنطَلَقَا حَتَّىٰٓ إِذَا لَقِيَا غُلَٰمٗا فَقَتَلَهُۥ قَالَ أَقَتَلۡتَ نَفۡسٗا زَكِيَّةَۢ بِغَيۡرِ نَفۡسٖ لَّقَدۡ جِئۡتَ شَيۡـٔٗا نُّكۡرٗا
So they went on until, when they met a young boy, he (al-Khadr) killed him. (Moses) said: "Have you killed an innocent soul (not in lawful retaliation but) without his having killed anyone? Assuredly you have done a horrible thing