In Chapter 16, Poem 10 of Attar's Mokhtar Nameh, the poet explores the theme of spiritual alienation through the metaphor of the 'mad heart' (دل دیوانه). The heart deliberately embraces estrangement and takes up residence in the 'alley of the sorrowful' (کوچهٔ اندوهگنان). This reflects a fundamental Sufi paradigm where conventional, worldly happiness is perceived as a 'deadly poison' (زهر قاتل) to the soul, whereas enduring sorrow and spiritual yearning are viewed as essential pathways to profound mystical realization and detachment from the material world.