By proving that the grave is a door opening to the realm of mercy,

By proving that the grave is a door opening to the realm of mercy, the abode of happiness, the garden of paradise, and the radiant abode of the Most Merciful, it eliminates the most dreadful fear of humanity, showing that the most painful, grievous, and distressing journey of the intermediate realm is, in fact, the most delightful, intimate, and joyful journey. It closes the mouth of the dragon with the grave and opens a door to a beautiful garden. In other words, it demonstrates that the grave is not the mouth of a dragon, but rather a door opening to the garden of divine mercy.