Allah's Messenger (ﷺ) said, "Both of them (Moses and Al-Khadir) proceeded on till they reached a wall
which was about to fall." Sa`d said , "(Al-Khadir pointed) with his hands (towards the
wall) and then raised his hands and the wall became straightened up." Ya`la said, "I think Sa`id [?? or
Sa`d] said, 'He (Khadir) passed his hand over it and it was straightened up." (Moses said to him), "if
you had wanted, you could have taken wages for it." Sa`id said, "Wages with which to
buy food . "
Sahih al-Bukhari Book 37, Hadith 7