It may be possible for me to conquer in battle Purandara armed with his thunder-bolt, but it is not possible for me to conquer Arjuna that subjugator of hostile towns,
अपि शक्यो रणे जेतुं वज्रहस्तः पुरंदरः। नार्जुनः समरे शक्यो जेतुं परपुरंजयः॥