Shatapatha Brahmana 10.6.1.6

10.6.1.6

atha hovāca mahāśālaṃ jābālam aupamanyava kaṃ tvaṃ vaiśvānaraṃ vetthetyākāśameva rājanniti hovācomiti hovācaiṣa vai bahulo vaiśvānara etaṃ hi vai tvam bahulaṃ vaiśvānaraṃ vettha tasmāttvam bahuḥ prajayā paśubhirasi yo vā etam bahulaṃ vaiśvānaraṃ vedāpa punarmṛtyuṃ jayati sarvamāyuretyātmā tvā eṣa vaiśvānarasyātmā tvāhāsyadyadi ha nāgamiṣya ityātmā te'vidito'bhaviṣyadyadi ha nāgamiṣya iti vā

He then said to Mahâsâla Gâbâla, 'O Aupamanyava, as whom knowest thou Vaisvânara?'--'As Ether only, O king,' he replied.--'Yea,' he said, 'that, indeed, is the Vaisvânara Plenteous; and because thou knowest Vaisvânara Plenteous, therefore thou art plentiful in offspring and cattle; and, verily, he who knows that Vaisvânara Plenteous, repels death and attains all life. But, in truth, this is only the trunk of Vaisvânara, and thy trunk would have failed thee, hadst thou not come hither; or the body would be unknown to thee, hadst thou not come hither.'