bhūyāt sa īśaḥ paramo guror guruḥ

yat-sevaya-the Supreme Personality of Godhead, by serving whom; agneh-in touch with fire; iva-as it is; rudra-rodanam-a block of silver or gold becomes purified; puman-a person; vijahyat-can give up; malam-all the dirty things of material existence; atmanah-of one's self; tamah-the mode of ignorance, by which one performs pious and impious activities; bhajeta-may revive; varnam-his original identity; nijam-one's own; esah-such; sah-He; avyayah-inexhaustible; bhuyat-let Him become; sah-He; isah-the Supreme Personality of Godhead; paramah-the supreme; guroh guruh-the spiritual master of all other spiritual masters.