Surah Al-Kahf — Ayah 76 (18:76)
قَالَ إِن سَأَلۡتُكَ عَن شَيۡءِۭ بَعۡدَهَا فَلَا تُصَٰحِبۡنِيۖ قَدۡ بَلَغۡتَ مِن لَّدُنِّي عُذۡرٗا ٧٦
English translation (Saheeh International)
[Moses] said, "If I should ask you about anything after this, then do not keep me as a companion. You have obtained from me an excuse."
Brief commentary
Moses (peace be upon him) said to Khidr: “Forgive me a second time. But if I ask you about anything after this time, then leave me, for you would have reached the limit, for which you can be excused for leaving my company, as I would have opposed your command three times”.