Śatapatha Brāhmaṇa ("of a hundred paths") 4.1.1.5

4.1.1.5

tānupanivapati | yatte somādābhyaṃ nāma jāgṛvi tasmai te soma somāya svāheti tadasya svāhākāreṇaivāṃśavaḥ pūtā bhavanti sarvaṃ vā eṣa grahaḥ sarveṣāṃ hi savanānāṃ rūpam

He throws them down again (on the unpressed plants) with (Vâg. S. VII, 2), 'What inviolable, quickening name is thine, to that Soma of thine, O Soma, be Hail!' Thus his sprigs become purified by means of the Svâhâ ('Hail!'). But this graha means everything, for it is the type of all the pressings.