Ar-Rahman Verse 66

In each will be two gushing springs.

In each there are two gushing springs.

therein two fountains of gushing water --

With a pair of gushing springs.

In which will be two fountains gushing forth.

In them (each) will be two Springs pouring forth water in continuous abundance;

In them will be two gushing springs.

With two fountains gushing constantly, --

In the Gardens are two springs, overflowing with abundance.

In both of them will be two gushing springs.

In them both are springs gushing forth.

Both of these two have two springs gushing forth.

In them (B) (are) two water springs/wells, (B) flowing/gushing .

In the Gardens are two springs, overflowing with abundance.

In both of them are two springs gushing forth.

In them (both) will be two springs gushing forth water.

Which then of the bounties of your Lord will you deny?

In both of them are two springs gushing forth.

Wherein are two abundant springs.

In these there will also be two springs gushing forth.

Therein are two gushing fountains of water.

In them (both) will be two springs Naddakhatan.

In both of them live springs gush forth.

In them are two gushing springs.

In both of them will be two gushing fountains, rushing with water, unceasing.

In them (both) will be two springs Naddakhatan.

There is no doubt that the former two gardens are better, their branches are fresh, youthful and intermingling. Allah said about the former two gardens,
فِيهِمَا عَيْنَانِ تَجْرِيَانِ
(In them (both) will be two springs flowing (free)), while He said about the springs of the latter two gardens,
نَضَّاخَتَانِ
(Naddakhatan);

Ali bin Abi Talhah reported from Ibn Abbas;

"It means gushing. And the free flowing is stronger than gushing."

Ad-Dahhak said that,
نَضَّاخَتَانِ
(gushing forth) means,

they are full of water and constantly gushing.

فَبِأَيِّ الَاء رَبِّكُمَا تُكَذِّبَانِ