In Poem 63 of Attar's Mokhtar Nameh, the poet utilizes geometric and natural metaphors to explain the realization of Tawhid (Divine Unity). He posits that spiritual vision requires absolute purity; only when the heart is 'free of darkness' (بیسیاهی) can one perceive a drop of the Divine ocean. Furthermore, Attar relates the inner soul to a 'point of unity' (نقطهٔ توحید). While a point is dimension-less and seemingly insignificant, through spiritual purification, this inner focal point is recognized as an 'infinite circle' (دایرهٔ نامتناهی). This illustrates the profound mystical paradox that the boundless Divine reality is reflected within the concentrated, singular essence of the human soul.