In Section 2 of Farid al-Din Attar's Mosibat Nameh, the prominent mystic Sufyan Thawri uses the metaphor of a dog to criticize those who squander their lives chasing worldly desires. He rebukes his followers for acting like dogs desperately running after a bone, warning that this obsession costs them their true life and soul. The poem contrasts the base, greedy nature of the dog (representing the ego or nafs) with the noble Homa bird of the soul (which in Persian mythology is famously content with eating only dry bones). Thawri urges the listener to stop feeding their base animalistic instincts and to nourish their spiritual essence instead, underscoring fundamental Sufi themes of asceticism, contentment, and the rejection of materialism.