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