الآية رقم (7) - الَّتِي تَطَّلِعُ عَلَى الْأَفْئِدَةِ

(7) - (Which mounts directed at the hearts. (7))

The fire will climb up to the corrupted hearts that are full of animosity, jealousy and hatred, which lead them to scorn and mock people. Allah (swt) mentions the heart because it is the place of intentions with which all the deeds of the man are connected with.