Surat Al Kahf (81-82)

{فَأَرَدْنَا أَن يُبْدِلَهُمَا رَبُّهُمَا خَيْراً مِّنْهُ زَكَاةً وَأَقْرَبَ رُحْماً} (الكهف: 81)

81- So, by killing him, I wanted Allah to replace his parents with a better son.

{وَأَمَّا الْجِدَارُ فَكَانَ لِغُلَامَيْنِ يَتِيمَيْنِ فِي الْمَدِينَةِ وَكَانَ تَحْتَهُ كَنزٌ لَّهُمَا وَكَانَ أَبُوهُمَا صَالِحاً فَأَرَادَ رَبُّكَ أَنْ يَبْلُغَا أَشُدَّهُمَا وَيَسْتَخْرِجَا كَنزَهُمَا رَحْمَةً مِّن رَّبِّكَ وَمَا فَعَلْتُهُ عَنْ أَمْرِي ذَلِكَ تَأْوِيلُ مَا لَمْ تَسْطِع عَّلَيْهِ صَبْراً} (الكهف: 82)

82- As for the wall which I fixed, it was for two orphan boys in the city, i.e., the mentioned village, and underneath there is a buried wealth (gold and silver) for them and their father was righteous. If the wall had been left, the treasure would have appeared and the two boy would not have defended it. So, your lord willed that they would grow up and become strong to bring forth their treasure while they are able to protect it.

What I have done was a mercy from Allah with the companions of the ship, the parents of the boy, and the sons of the righteous man. I have not done that by my choice, but I was commanded to do so which is a proof to his prophethood. The news which I narrated to you is the instances which you could not observe patience for.

There is no authentic proof that Al Khadir is still alive.