mathiH 1:21

yatastasyA garbhaH pavitrAdAtmano.abhavat, sA cha putraM prasaviShyate, tadA tvaM tasya nAma yIshum (arthAt trAtAraM) karIShyase, yasmAt sa nijamanujAn teShAM kaluShebhya uddhariShyati|

mathiH 1:21