[Quran 55:19] He has made the two seas to flow freely (so that) they meet together:
[Quran 55:20] Between them is a barrier which they cannot pass.
Surah Al-Maeda, Verse 97:
Allah has made the Kaaba,
the sacred house,
a maintenance for the people,
and the sacred month and the offerings and the sacrificial animals with garlands;
this is that you may know that Allah knows whatever is in the heavens and whatever is in the earth,
and that Allah is the Knower of all things.