The chariot stands ready now. Wheels, banner, horses, charioteer, each in its place. Now Rama turns to the weapons that ride upon this chariot, and to the armor that no blade can pierce. Every one of these weapons belongs to the inner world.
दान परसु बुधि सक्ति प्रचंडा।
बर बिग्यान कठिन कोदंडा॥
Giving is the battle-axe of this chariot, intellect its fierce power, and the highest wisdom that unyielding bow whose string is not drawn without effort. Why does Rama call giving a battle-axe? Because greed is a great enemy of man, and giving is the very axe that cuts greed off at the root. Whoever learns to give finds the hunger to hoard cutting away on its own.
अमल अचल मन त्रोन समाना।
सम जम नियम सिलीमुख नाना॥
This is the freshest and deepest image of all. A quiver is the thing from which arrows come. Rama says that a pure and unwavering mind is that very quiver. When a mind is free of stain and free of every tremor, all its virtues come forth from within it as arrows. And which arrows are these? The many shafts of equanimity, of yama (restraint), and of niyama (observance).
कवच अभेद बिप्र गुर पूजा।
एहि सम बिजय उपाय न दूजा॥
And at the last, the most impenetrable armor of all. Honoring the brahmins and the guru, Rama says, is the armor that nothing can pierce, and there is no other means of victory to equal it. This carries enormous weight. The arrows of the ego are the deadliest of all, and bowing before the guru is the very armor that keeps the ego from breaking in.
Source: Tulsidas, Ramcharitmanas, Lanka Kanda