In Chapter 40, Poem 23 of Attar's Mokhtar Nameh, the relationship between physical frailty and inner spiritual strength is explored through the metaphor of a balance scale (mizan). The lover contrasts their weak body with a heart 'stronger than stone.' The Beloved responds by affirming this condition, comparing the lover's worth to gold being weighed against a stone weight. Just as a heavier stone on a goldsmith's scale requires more gold to balance it, the lover's weighty, enduring heart demonstrates a greater yield of spiritual purity and value when evaluated by the Divine.