Surat Al-Kahf (The Cave) - سورة الكهف

: "So we intended that their Lord should change him for them for one better in righteousness and near to mercy.

: "And as for the wall, it belonged to two orphan boys in the town; and there was under it a treasure belonging to them; and their father was a righteous man, and your Lord intended that they should attain their age of full strength and take out their treasure as a mercy from your Lord. And I did it not of my own accord. That is the interpretation of those (things) over which you could not hold patience."

: And they ask you about Dhul-Qarnain. Say: "I shall recite to you something of his story."

: Verily, We established him in the earth, and We gave him the means of everything.

: So he followed a way.

: Until, when he reached the setting place of the sun, he found it setting in a spring of black muddy (or hot) water. And he found near it a people. We (Allah) said (by inspiration): "O Dhul-Qarnain! Either you punish them, or treat them with kindness."

: He said: "As for him (a disbeliever in the Oneness of Allah) who does wrong, we shall punish him; and then he will be brought back unto his Lord; Who will punish him with a terrible torment (Hell).