Tafseer Ibn Kathir of AL KAHFI [78]

قَالَ هَذَا فِرَاقُ بَيْنِي وَبَيْنِكَ سَأُنَبِّئُكَ بِتَأْوِيلِ مَا لَمْ تَسْتَطِع عَّلَيْهِ صَبْرًا

[Al-Khidh r] said, "This is parting between me and you. I will inform you of the interpretation of that about which you could not have patience.