In Chapter 11, Poem 21 of Attar's Mokhtar Nameh, the poet explores the profound suffering and bewilderment caused by an inaccessible divine or mystical secret. The imagery of being drenched in the blood of weeping eyes conveys intense spiritual anguish. Furthermore, the metaphor of trying to uncover the secret with the 'needle of thought' highlights the inadequacy and futility of intellectual or rational efforts in grasping a mystery whose 'thread' remains undiscovered by anyone, emphasizing the transcendent and unknowable nature of the ultimate truth.