سورة Al-Kahf ( The Cave ) - الآية 82

And as for the wall, it belonged to two orphan boys in the town and underneath it was a treasure belonging to them and their father had been righteous. So thy Lord intended that the twain should attain their maturity and bring forth for themselves their treasure as a mercy from thy Lord. And I did it not of mine own command; that is the interpretation of that wherewith thou wast not able to have patience.