Patience (sabr) in the face of mysterious divine actions

قَالَ هَـٰذَا فِرَاقُ بَيْنِى وَبَيْنِكَ ۚ سَأُنَبِّئُكَ بِتَأْوِيلِ مَا لَمْ تَسْتَطِع عَّلَيْهِ صَبْرًا

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