Surah At-Tawbah, ayah 110

9:110

لَا يَزَالُ بُنۡيَٰنُهُمُ ٱلَّذِي بَنَوۡاْ رِيبَةٗ فِي قُلُوبِهِمۡ إِلَّآ أَن تَقَطَّعَ قُلُوبُهُمۡۗ وَٱللَّهُ عَلِيمٌ حَكِيمٌ ١١٠

Lā yazālu bunyānuhumul-ladhī banaw rībatan fī qulūbihim illā an taqatta'a qulūbuhum wallāhu 'alīmun hakīm

Their building which they built will not cease to be a [cause of] skepticism in their hearts until their hearts are cut [i.e., stopped]. And Allāh is Knowing and Wise.