1. وَقَدْ طَافَ في الدُّنيا أرِيجُ ثَنائِه

    فإنْ لَمْ يَكُنْ خِضْراً فإنَّ ابنَهُ الخِضْرُ

    And the fragrance of praise for him has traveled the world.

    So if he is not Khidr, then his son is al-Khidr.