Translation of the verse 74 from Surah Al-Kahf : Number of verses 110 - - page 301 - Part 15.
Then they both proceeded, till they met a boy, he (Khidr) killed him. Musa (Moses) said: "Have you killed an innocent person who had killed none? Verily, you have committed a thing "Nukra" (a great Munkar - prohibited, evil, dreadful thing)!"
So they set out, until when they met a boy, al-Khidh r killed him. [Moses] said, "Have you killed a pure soul for other than [having killed] a soul? You have certainly done a deplorable thing."
(18:74) Then they journeyed on until they met a boy and that person slew him. Moses cried out, "Have you killed an innocent person, though he had killed nobody? Surely this is a horrible deed that you have committed" .