Surah Al-Kahf Ayahs #72 Translated in English

And how can you have patience for what you do not encompass in knowledge?"

[Moses] said, "You will find me, if Allāh wills, patient, and I will not disobey you in [any] order."

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?"