Quran 25:52 — The Statute Book (Al-Furqan)

Therefore, do not obey the disbelievers, and strive against them with this, a great striving.

[25:51] If we willed, we could have sent to every community a warner.

[25:53] He is the One who merges the two seas; one is fresh and palatable, while the other is salty and undrinkable. And He separated them with a formidable, inviolable barrier (evaporation).