In Book Five, Section 105 of the Masnavi, Rumi employs the metaphor of Ali ibn Abi Talib's legendary sword, Dhulfiqar, to emphasize the necessity of inner spiritual strength and courage. Rumi asserts that merely possessing a powerful tool or outward form—such as inheriting Dhulfiqar—is entirely useless without the corresponding 'arm of the Lion of God' (Imam Ali's spiritual capacity and bravery). This allegory illustrates the broader Sufi teaching that outward displays of power, knowledge, or piety are ineffective and hollow without true inner transformation and a courageous heart.