In Attar's Mosibat Nameh, this allegory describes a son named Rostam (after the legendary Persian hero) who turns out to be weak and cowardly. Attar uses this story to illustrate that a name carries no inherent spiritual or physical reality unless backed by truth and action. He warns that names given by worldly entities are traps, emphasizing that true identity and completion of tasks depend on inner reality rather than nominal designations.