In Chapter 15, Poem 18 of Attar's Mokhtar Nameh, the poet expresses the concept of existential confinement. The poem asserts that every assembly, every individual ('you and I'), and all elements of the cosmos ('particles of earth and sky') remain confined within the boundaries of their own manifestations. From a Sufi perspective, this highlights the illusion of separateness and the limitation of failing to transcend individual existence to reach universal unity.