Until when Dhul-Qarnayn reached the setting of the sun he found it in the sight of the eye as if it sets in a hot spring having black mud, and he found at its setting a people. We said: "O Dhul-Qarnayn either that you punish them by killing or other, if they did not acknowledge with the monotheism of Allah, and either that you be good to them, thus you teach them the guidance and show them clearly the correctness."