Hearts, hardened

Then your hearts became hardened after that, being like stones or even harder. For indeed, there are stones from which rivers burst forth, and there are some of them that split open and water comes out, and there are some of them that fall down for fear of Allāh. And Allāh is not unaware of what you do.

[That is] so He may make what Satan throws in [i.e., asserts] a trial for those within whose hearts is disease¹ and those hard of heart. And indeed, the wrongdoers are in extreme dissension.

So is one whose breast Allāh has expanded to [accept] Islām and he is upon [i.e., guided by] a light from his Lord [like one whose heart rejects it]? Then woe to those whose hearts are hardened against the remembrance of Allāh. Those are in manifest error.

Has the time not come for those who have believed that their hearts should become humbly submissive at the remembrance of Allāh and what has come down of the truth? And let them not be like those who were given the Scripture before, and a long period passed over them, so their hearts hardened; and many of them are defiantly disobedient.