In Poem 27 of Attar's Mokhtar Nameh, the metaphor of the beloved's mouth being as narrow as the 'eye of a needle' (چشم سوزن) is employed to illustrate the absolute impossibility of the lover obtaining 'sugar' (شکر), which represents a sweet kiss, favor, or kind words. This hyperbole emphasizes the beloved's profound unattainability and the lover's subsequent frustration. It serves as a striking variation of the common Persian poetic motif of the 'narrow mouth' (تنگ دهان), highlighting not merely aesthetic beauty, but the absolute inaccessibility of the beloved's grace.