الفرقان — Al-Furqan Ayat 53
۞ وَهُوَ الَّذِيْ مَرَجَ الْبَحْرَيْنِ هٰذَا عَذْبٌ فُرَاتٌ وَّهٰذَا مِلْحٌ اُجَاجٌۚ وَجَعَلَ بَيْنَهُمَا بَرْزَخًا وَّحِجْرًا مَّحْجُوْرًا
Wa huwal-lażī marajal-baḥraini hāżā ‘ażbun furātuw wa hāżā milḥun ujāj(un), wa ja‘ala bainahumā barzakhaw wa ḥijram maḥjūrā(n).
"And it is He who has released [simultaneously] the two seas, one fresh and sweet and one salty and bitter, and He placed between them a barrier and prohibiting partition."