كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِم مَّا كَانُوا يَكْسِبُونَ
[83:14]
Nay! rather, what they used to do has become like rust . upon their hearts.
By no means! but on their hearts is the stain of the (ill) which they do!
Nay, but that which they have earned is rust upon their hearts.