In Farid al-Din Attar's Mosibat Nameh, the tale of Bu Ali Tusi serves as an allegory for the insufficiency of temporary, worldly existence to encompass or express the divine mysteries of love. Overwhelmed by love, Tusi laments when the day ends, concluding that true, eternal spiritual discourse requires an eternal state of being (a complete day not followed by night). This illustrates the Sufi view that complete spiritual realization can only be fully realized in the permanent realm of the divine, beyond the transitory cycles of the physical world.