Quran 2:74 from Surah Al-Baqara on Divine Marvels.
ثُمَّ قَسَتۡ قُلُوبُكُم مِّنۢ بَعۡدِ ذَٰلِكَ فَهِيَ كَٱلۡحِجَارَةِ أَوۡ أَشَدُّ قَسۡوَةٗۚ وَإِنَّ مِنَ ٱلۡحِجَارَةِ لَمَا يَتَفَجَّرُ مِنۡهُ ٱلۡأَنۡهَٰرُۚ وَإِنَّ مِنۡهَا لَمَا يَشَّقَّقُ فَيَخۡرُجُ مِنۡهُ ٱلۡمَآءُۚ وَإِنَّ مِنۡهَا لَمَا يَهۡبِطُ مِنۡ خَشۡيَةِ ٱللَّهِۗ وَمَا ٱللَّهُ بِغَٰفِلٍ عَمَّا تَعۡمَلُونَ
English translation: Then hardened your hearts from after that so they (became) like [the] stones or stronger (in) hardness And indeed from the stones certainly (there are some) which gush forth from it [the] rivers and indeed from them certainly (there are some) which split so comes out from it [the] water and indeed from them certainly (there are some) which fall down from fear (of) Allah And not (is) Allah unaware of what you do
Transliteration: thumma qasat qulubukum min ba'di dhalika fahiya kal-hijarati aw ashaddu qaswatan wa-inna mina al-hijarati lama yatafajjaru min'hu al-anharu wa-inna min'ha lama yashaqqaqu fayakhruju min'hu al-mau wa-inna min'ha lama yahbitu min khashyati al-lahi wama al-lahu bighafilin amma ta'maluna