vritau -- surrounded; gopaih -- by cowherd boys; katipayaih -- several; baladeva-janardanau -- Balarama and Krishna; rangam -- the arena; vivisatuh -- entered; rajan -- O King (Parikshit); gaja-danta -- the elephant's tusks; vara -- chosen; ayudhau -- whose weapons.

My dear King, Lord Baladeva and Lord Janardana, each carrying one of the elephant's tusks as His chosen weapon, entered the arena with several cowherd boys.