18:11Then We sealed their ears in the cave for a number of years.

18:25And they stayed in their cave for three hundred years, adding nine.

18:57Who does greater wrong than he, who, when reminded of his Lord’s revelations, turns away from them, and forgets what his hands have put forward? We have placed coverings over their hearts, lest they understand it, and heaviness in their ears. And if you call them to guidance, they will not be guided, ever.

18:60Recall when Moses said to his servant, “I will not give up until I reach the junction of the two rivers, even if it takes me years.”