Allah (swt) enumerates the aspects of pleasure and this is the first one. The interpreters said that a couch is a bed according to what we know in the human language, while the one which is in the Paradise is unseen to us, no eye has ever seen it, nor its shape occurred to a human’s heart, so it does not exist in a language, as the word is given after its meaning appears. That is why the Holy Qur’an says in describing the Paradise:

 {مَّثَلُ الْجَنَّةِ الَّتِي وُعِدَ الْمُتَّقُونَ}

(The example of Paradise, which the righteous have been promised,) (Ar-Ra’d: 35)

Allah (swt) brings the meaning closer to mind by an explanatory example. Allah (swt) also says:

{ فَلَا تَعْلَمُ نَفْسٌ مَّا أُخْفِيَ لَهُم مِّن قُرَّةِ أَعْيُنٍ جَزَاءً بِمَا كَانُوا يَعْمَلُون}

(And no soul knows what has been hidden for them of comfort for eyes as reward for what they used to do.) (As-Sajda: 17)

The Prophet, as well, described the Paradise by saying:

(“Allah Most High said: ‘I have prepared for My righteous worshipers what no eye has seen, no ear has heard, and no human heart has conceived.)[1]

The Truthful’s (swt) saying:

عَلَى الْأَرَائِكِ يَنظُرُونَ

(On adorned couches, observing. (23)

Gives us another meaning: In life you can sit on fancy couches and at the same time you may be worried about anything, busy from the pleasures that surrounding you and you do not feel them, whereas, in paradise, there is nothing that distract mankind from pleasure, he will live in it, busy with it.

[1] Sahih Bukhari, Book of Beginning of Creation, The Pertaining to Paradise, Its description, Hadith No. 3072