This allegory in Attar's Mosibat Nameh describes a white bird that rests on the coffin of the deceased Sufi master Junayd of Baghdad. The bird represents the celestial or spiritual realm claiming his purified body due to the 'nail of love' that bound them. It highlights the Sufi theme of the division between the physical shell (belonging to the celestial beings or returning to earth) and the heart (which belongs solely to the Divine Friend).