Surah Al-Kahf (The Cave), Verse 74

فَانْطَلَقَا حَتّٰۤی اِذَا لَقِیَا غُلٰمًا فَقَتَلَهٗ قَالَ اَقَتَلْتَ نَفْسًا زَكِیَّةً بِغَیْرِ نَفْسٍ لَقَدْ جِئْتَ شَیْـًٔا نُّكْرًا ۟

Fantalaqaa hattaa izaa laqiyaa ghulaaman faqatalahoo qaala aqatalta nafsan zakiy yatam bighairi nafs; laqad ji'ta shai'an nukraa

“Then they proceeded: until, when they met a young man, he slew him. Moses said: "Hast thou slain an innocent person who had slain none? Truly a foul (unheard of) thing hast thou done!"”

Quran 18:74 (Yusuf Ali Translation)