In Chapter 11, Poem 27 of Attar's Mokhtar Nameh, the poet explores the absolute ineffability of mystical union and the sorrow inherent in the spiritual endeavor. The assertion that the profound secret between the seeker and the Beloved 'cannot be told except upon the gallows' (بر سر دار) is a direct allusion to the famous Sufi martyr Mansur al-Hallaj. This metaphor illustrates the esoteric principle that ultimate divine truths are incompatible with the ordinary world; revealing them demands the ultimate price of self-sacrifice, positing the gallows as the only stage where absolute truth can be freely expressed.