2:88
And they said, "Our hearts (are) wrapped." Nay, has cursed them Allah for their disbelief; so little (is) what they believe.

4:155
Then because of their breaking (of) their covenant and their disbelief in (the) Signs (of) Allah and their killing (of) the Prophets without any right and their saying, "Our hearts (are) wrapped." Nay, (has) set a seal Allah on their (hearts) for their disbelief so not they believe except a few.