In Jalaluddin Rumi's Masnavi, the king continues his examination of two newly purchased slaves by testing the second, who appears physically unappealing with a 'foul-smelling mouth.' To provoke him, the king falsely claims that the first slave had severely slandered his character. Instead of retaliating with reciprocal insults, the second slave steadfastly praises his companion's honesty, asserting that any such criticisms must accurately reflect his own hidden flaws. Rumi uses this narrative to deliver a profound lesson on spiritual self-awareness and the human tendency to focus on external judgments. The slave explains that people are generally 'heedless of themselves' and easily see the faults of others, much like one sees a companion's face but not their own. Rumi concludes that if individuals were genuinely aware of their own defects, they would be entirely occupied with their own spiritual reformation. Therefore, the rare soul who is illuminated enough to 'see his own face' possesses a divine vision far superior to ordinary sensory perception.