مُتَّكِيِينَ عَلَى سُرُرٍ مَّصْفُوفَةٍ

They will recline (with ease) on thrones Masfufah. 

Ath-Thawri reported from Husayn, from Mujahid, from Ibn Abbas:

"Thrones in howdahs."

And the meaning of, (Masfufah) is they will be facing each other,

عَلَى سُرُرٍ مُّتَقَـبِلِينَ

Facing one another on thrones. (37:44)

Allah said next,
 
وَزَوَّجْنَاهُم بِحُورٍ عِينٍ
 
 

And We shall marry them to Hur (fair females) with wide lovely eyes.

We made for them righteous spouses, beautiful wives from Al-Hur Al-`Ayn.

We mentioned the description of Al-Hur Al-`Ayn in several other places in this Tafsir, and therefore, it is not necessary to repeat their description here