śrī-bhagavān uvāca - the Supreme Lord said; vṛthā - in vain; tvam - you; katthase - boast; manda - O dull one; na paśyasi - you do not see; antike - near; antakam - death; pauruṣam - their prowess; darśayanti - demonstrate; sma - indeed; śūrāḥ - heroes; na - not; bahu - much; bhāṣiṇaḥ - speaking.

The Supreme Lord said: O dullard, you boast in vain, since you fail to see death standing near you. Real heroes do not talk much but rather show their prowess in action.