In Farid al-Din Attar's Mosibat Nameh, the story of Caliph Omar plastering a gutter with mud serves as an allegory for the illusion of worldly permanence and the neglect of death's inevitability. When the Prophet passes by without offering a greeting, he admonishes Omar, explaining that focusing on physical building and worldly structures signifies a lack of true belief in death. The parable serves as a memento mori, emphasizing that since human beings will ultimately turn to dust, investing in temporary worldly construction distracts from the preparation for the inevitable journey beyond this world.