SUN SETTING IN MURKY WATER!!?
Quranic verse is Surah kahf chapter 18 verse 86 it says:
"Until, when he reached the setting of the sun, he found it [as if] setting in a spring of dark mud, and he found near it a people. Allah said, "O Dhul-Qarnayn, either you punish [them] or else adopt among them [a way of] goodness."