yo 'han suptān śiśūn vṛthā

tatra-thereupon; aha-said; amarsitah-in an angry mood; bhimah-Bhima; tasya-his; sreyan-ultimate good; vadhah-killing; smrtah-recorded; na-not; bhartuh-of the master; na-nor; atmanah-of his own self; ca-and; arthe-for the sake of; yah-one who; ahan-killed; suptan-sleeping; sisun-children; vrtha-without purpose.