Translation of the verse 65 from Surah Al-Kahf : Number of verses 110 - - page 301 - Part 15.
Then they found one of Our slaves, unto whom We had bestowed mercy from Us, and whom We had taught knowledge from Us.
And they found a servant from among Our servants to whom we had given mercy from us and had taught him from Us a [certain] knowledge.
(18:65) and there they found one of our servants whom We had blessed with special favour and had given him a special knowledge from Ourselves. *59
*59) The name of this Servant has been stated to be "Khidr" in all the authentic books of traditions. Thus there is no reason why it should be considered at all that his name was Elijah, as some people have asserted under the influence of the Israelite traditions. Their assertion is incorrect not only because it contradicts the assertion of the Holy Prophet but it is also absurd because Prophet Elijah was born several hundred years after Prophet Moses. Though the Qur'an does not mention the name of the attendant of Prophet Moses, according to some traditions he was Joshua, the son of Nun, who succeeded him.