In Attar's The Tale of the Old Woman Who Gave a Piece of Gold Paper to Abu Ali, the narrative serves as a profound exposition of the Sufi principle of Wahdat (Divine Unity). When the sheikh refuses the gold by claiming he takes nothing except from God, the old woman accuses him of spiritual strabismus or seeing double (احولی). She argues that recognizing an 'other' (such as herself or the gold) contradicts absolute Unity. The poem emphasizes that in true spiritual vision, distinctions like the Kaaba and the monastery dissolve, asserting that anyone who does not lose themselves in the 'Sea of Unity' (دریای وحدت) fails to achieve true spiritual humanity.