فَٱنطَلَقَا حَتَّىٰٓ إِذَا لَقِيَا غُلَـٰمًا فَقَتَلَهُۥ قَالَ أَقَتَلْتَ نَفْسًا زَكِيَّةًۢ بِغَيْرِ نَفْسٍ لَّقَدْ جِئْتَ شَيْـًٔا نُّكْرًا
fa-inṭalaqā ḥattā idhā laqiyā ghulāman faqatalahu qāla aqatalta nafsan zakiyyatan bighayri nafsin laqad ji'ta shayan nuk'ran
So they set out, until when they met a boy, he [i.e., al-Khiḍr] killed him. [Moses] said, "Have you killed a pure soul for other than [having killed] a soul? You have certainly done a deplorable thing."
— Saheeh International
And so they travelled on. Then, when they met a young boy and the man killed him, Moses said, ‘How could you kill an innocent person? He has not killed anyone! What a terrible thing to do!’
— M. A. S. Abdel Haleem
Then they both proceeded, till they met a boy, and he (Khidr) killed him. Mûsâ (Moses) said: "Have you killed an innocent person who had killed none? Verily, you have committed a thing Nukr (a great Munkar - prohibited, evil, dreadful thing)!"
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali