Shatapatha Brahmana 10.6.1.5

10.6.1.5

atha hovāca satyayajñam pauluṣim prācīnayogya kaṃ tvaṃ vaiśvānaraṃ vetthetyapa eva rājanniti hovācomiti hovācaiṣa vai rayirvaiśvānara etaṃ hi vai tvaṃ rayiṃ vaiśvānaraṃ vettha tasmāttvaṃ rayimānpuṣṭimānasi yo vā etaṃ rayiṃ vaiśvānaraṃ vedāpa punarmṛtyuṃ jayati sarvamāyureti vastistvā eṣa vaiśvānarasya vastistvāhāsyadyadi ha nāgamiṣya iti vastiste'vidito'bhaviṣyadyadi ha nāgamiṣya iti vā

He then said to Satyayagña Paulushi, 'O Prâkînayogya, as whom knowest thou Vaisvânara?' --'As Water only, O king;' he replied.--'Yea,' he said, 'that indeed is the Vaisvânara Wealth; and because thou knowest that Vaisvânara Wealth, therefore thou art wealthy and prosperous; and, verily, he who knows that Vaisvânara Wealth, repels death and attains all life. But, in truth, this is only the bladder of Vaisvânara, and thy bladder would have failed thee, hadst thou not come hither; or the bladder would be unknown to thee, hadst thou not come hither.'