﴿ وَنَزَعْنَا مَا فِى صُدُورِهِم مِّنْ غِلٍّ إِخْوَٰنًا عَلَىٰ سُرُرٍۢ مُّتَقَٰبِلِينَ ﴾

“And [by then] We shall have removed whatever unworthy thoughts or feelings may have been [lingering] in their breasts, [and they shall rest] as brethren, facing one another [in love] upon thrones of happiness.”

And We remove whatever rancour spite may be in their breasts. As brethren ikhwānan is a circumstantial qualifier referring to them they shall recline upon couches facing one another mutaqābilīn is also a circumstantial qualifier in other words they do not look upon each other’s backs because the couches revolve with them in them.