Sealed Hearts

Allah has sealed their hearts and ears, and a veil covers their sight

2:7Allah hath sealed their hearing and their hearts, and on their eyes there is a covering. Theirs will be an awful doom.

4:155Then because of their breaking of their covenant, and their disbelieving in the revelations of Allah, and their slaying of the prophets wrongfully, and their saying: Our hearts are hardened - Nay, but Allah set a seal upon them for their disbelief, so that they believe not save a few -

9:87They are content that they should be with the useless and their hearts are sealed, so that they apprehend not.

9:93The road (of blame) is only against those who ask for leave of thee (to stay at home) when they are rich. They are content to be with the useless. Allah hath sealed their hearts so that they know not.