Surah Al-Kahf Verse 74 - English Translation by Maududi
Surah Al-Kahfفَٱنطَلَقَا حَتَّىٰٓ إِذَا لَقِيَا غُلَٰمٗا فَقَتَلَهُۥ قَالَ أَقَتَلۡتَ نَفۡسٗا زَكِيَّةَۢ بِغَيۡرِ نَفۡسٖ لَّقَدۡ جِئۡتَ شَيۡـٔٗا نُّكۡرٗا
Then the two went forth until they met a lad whom he slew, whereupon Moses exclaimed: "What! Have you slain an innocent person without his having slain anyone? Surely you have done a horrible thing