tasya-his (Puranjaya's); isu-pata-the throwing of the arrows; abhimukham-in front of; yuga-anta-at the end of the millennium; agnim-the flames; iva-exactly like; ulbanam-fierce; visrjya-giving up the attack; dudruvuh-ran away; daityah-all the demons; hanyamanah-being killed (by Puranjaya); svam-own; alayam-to the residence.