In Attar's Mokhtar Nameh (Chapter 35, Poem 15), the metaphor of 'tears of blood' (خون جگر) represents the involuntary exposure of the heart's deepest secrets. The profound anguish of love shatters the 'veil of the heart' (پردهٔ دل), forcing hidden suffering to manifest physically through blood-stained weeping. This imagery emphasizes the lover's ultimate inability to conceal their spiritual and emotional torment.