mathiH 1:21

yatastasyA garbhaH pavitrAdAtmano'bhavat, sA ca putraM prasaviSyate, tadA tvaM tasya nAma yIzum (arthAt trAtAraM) karISyase, yasmAt sa nijamanujAn teSAM kaluSebhya uddhariSyati|

mathiH 1:21