ٱلْأَحْقَاف : ١٤

  • أُوْلَٰٓئِكَ Those
  • أَصۡحَٰبُ (are the) companions
  • ٱلۡجَنَّةِ (of) Paradise
  • خَٰلِدِينَ abiding forever
  • فِيهَا therein
  • جَزَآءَۢ a reward
  • بِمَا for what
  • كَانُواْ they used (to)
  • يَعۡمَلُونَ do
Those are the companions of Paradise, abiding eternally therein as reward for what they used to do.
Those will be the inhabitants of the Paradise, abiding therein (khaalideena feehaa is a circumstantial qualifier) as a reward (jazaa'an is in the accusative as a verbal noun, because of the implied verbal action, that is to say, yujzawna, 'they will be rewarded') for what they used to do.