In Fariduddin Attar's 'Mosibat Nameh', the story of Jesus and the dead dog illustrates the Sufi concept of 'pak-bini' (pure-sightedness). When Jesus and his companion encounter a decaying dog, the companion complains of its foul odor, while Jesus points out the brilliant whiteness of its teeth. This allegory teaches spiritual seekers to overlook external defects and cultivate a pure vision that recognizes the divine beauty inherent in all of creation.