At-Tur Verse 6

And by the seas set on fire![[ The seas and oceans will be on fire on Judgment Day. ]]

and by the sea ever filled.

and the sea swarming,

by the ocean ever filled,

By the sea overflowing.

And by the Ocean filled with Swell;-

and by the swelling sea:

And the swollen sea,

And the sea set aflame.

by the surging sea:

And by the sea kept filled (and ready to overflow),

And the dry and empty sea,

By/and the sea/ocean , the filled and overflowed .

And the sea set aflame.

And the swollen sea,

And by the sea kept filled (or it will be fire kindled on the Day of Resurrection).

And the elevated canopy,

And the swollen sea

And the sea kept filled,

and by the swelling ocean,

and the sea that is full

And by the sea that is Masjur.

and by the swelling sea,

And the seething sea.

and the swarming sea; that is to say, the one that is filled;

And by the sea that is Masjur.

The majority say it refers to the oceans of the earth.
Masjur, means, the sea will be kindled with fire on the Day of Resurrection just as Allah said in another Ayah,

وَإِذَا الْبِحَارُ سُجِّرَتْ

And when the seas become as blazing fire. (81;6)

i.e., it will be kindled with fire and become a raging fire that surrounds the people in the gathering area,

this was reported by Sa`id bin Al-Musayyib from Ali bin Abi Talib.

It was also reported from Ibn Abbas, and it is the view of Sa`id bin Jubayr, Mujahid, Abdullah bin Ubayd bin Umayr and others.

Qatadah said,

"Masjur is the `filled sea."'

Ibn Jarir preferred this explanation saying, "The sea is not lit with fire now, so it is filled."

Allah's statement;

إِنَّ عَذَابَ رَبِّكَ لَوَاقِعٌ