Al-Mu'minun 23:63

Bal quloobuhum fee ghamratin min hathawalahum aAAmalun min dooni thalika hum lahaAAamiloon

But their hearts are covered with confusion over this, and they have [evil] deeds besides that [i.e., disbelief] which they are doing,

But their hearts are in ignorance about this, and they have deeds, other than that, which they are continuously doing.