Surah Al-Kahf Ayahs #74 Translated in English

He said, "Then if you follow me, do not ask me about anything until I make to you about it mention [i.e., explanation]."

So they set out, until when they had embarked on the ship, he [i.e., al-Khiḍr] tore it open. [Moses] said, "Have you torn it open to drown its people? You have certainly done a grave thing."

[Al-Khiḍr] said, "Did I not say that with me you would never be able to have patience?"

[Moses] said, "Do not blame me for what I forgot and do not overwhelm me in my matter with difficulty."

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."