tasya nirmanthanaj jato
trayya sa vidyaya rajna
putratve kalpitas tri-vrt
tasya—of Pururava; nirmanthanat—because of interaction; jatah—was born; jata-vedah—meant for material enjoyment according to the Vedic principles; vibhavasuh—a fire; trayya—following the Vedic principles; sah—the fire; vidyaya—by such a process; rajna—by the King; putratve—a sonís being born; kalpitah—it so became; tri-vrt—the three letters a-u-m combined together as om.
From Pururavaís rubbing of the aranis came a fire. By such a fire one can achieve all success in material enjoyment and be purified in seminal birth, initiation and in the performance of sacrifice, which are invoked with the combined letters a-u-m. Thus the fire was considered the son of King Pururava.
According to the Vedic process, one can get a son through semen (sukra), one can get a bona fide disciple through initiation (savitra), or one can get a son or disciple through the fire of sacrifice (yajna). Thus when Maharaja Pururava generated the fire by rubbing the aranis, the fire became his son. Either by semen, by initiation or by yajna one may get a son. The Vedic mantra omkara, or pranava, consisting of the letters a-u-m, can call each of these three methods into existence. Therefore the words nirmanthanaj jatah indicate that by the rubbing of the aranis a son was born.
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