سورة الفرقان

وَهُوَ الَّذِي مَرَجَ الْبَحْرَيْنِ هَٰذَا عَذْبٌ فُرَاتٌ وَهَٰذَا مِلْحٌ أُجَاجٌ وَجَعَلَ بَيْنَهُمَا بَرْزَخًا وَحِجْرًا مَحْجُورًا ﴿٥٣﴾

Surah al-Furqan

53. And it is He who merged the two seas: this one sweet and drinkable, and the other salty and bitter. And He placed between them a barrier and an impassable boundary.