Verse 15

तत्रासिमुसलप्रासवज्रचक्रगदादयः ।हेतयः कुण्ठतां यान्ति दृषदीवोत्पलाहतिः

In plain words

There, sword and club, lance, thunderbolt, discus, mace, and the rest -- all such weapons go blunt, like the blow of a lotus against stone.