Ramayana 6.328

His giant foe no answer made, But on his string an arrow laid. He raised his arm, the cord he drew, At Lakshman's breast the arrow flew. Sumitra's son, his foemen's dread, Shot a fleet shaft with crescent head, Which cleft that arrow pointed well, And harmless to the earth it fell. A shower of shafts from Lakshman's bow Fell fast and furious on the foe Who quailed not as the missiles smote With idle force his iron coat. Then came the friendly Wind-God near, And whispered thus in Lakshman's ear: "Such shafts as these in vain assail Thy foe's impenetrable mail. A more tremendous missile try, Or never may the giant die. Employ the mighty spell, and aim The weapon known by Brahma's name." He ceased; Sumitra's son obeyed: On his great bow the shaft was laid, And with a roar like thunder, true As Indra's flashing bolt, it flew. The giant poured his shafts like rain To check its course, but all in vain. With spear and mace and sword he tried To turn the fiery dart aside. Winged with a force which naught could check, It smote the monster in the neck, And, sundered from his shoulders, rolled To earth his head and helm of gold.