vidhamantaḿ sva-sainyāni
dyumantaḿ rukmiṇī-sutaḥ
pratihatya pratyavidhyān
nārācair aṣṭabhiḥ smayan
vidhamantam -- smashing; sva -- His; sainyani -- soldiers; dyumantam -- Dyuman; rukmini-sutah -- the son of Rukmini (Pradyumna); pratihatya -- counterattacking; pratyavidhyat -- He struck back; naracaih -- with special arrows made of iron; ashtabhih -- eight; smayan -- while smiling.
Srila Visvanatha Cakravarti comments that Pradyumna challenged Dyuman, saying "Now see if you can strike Me!" After saying this and allowing Dyuman to shoot his weapons, Pradyumna released His own deadly arrows.