Karna considers Arjuna capable of being vanquished when the latter takes up his weapons in battle. In former days there were many great battles. Why were they not benefited by Karna.
यत् तत् कर्णो मन्यते पारणीयं युद्धे गृहीतायुधमर्जुनं वै। आसंश्च युद्धानि पुरा महान्ति कथं कर्णो नाभवद् द्वीप एषाम्॥