Śatapatha Brāhmaṇa ("of a hundred paths") 7.4.2.9

7.4.2.9

tadāhuḥ | kathamepa puruṣaḥ svayamātṛṇayānabhinihito bhavatītyannaṃ vai svayamātṛṇā prāṇaḥ svayamātṛṇānabhinihito v ai puruṣo 'nnena ca prāṇena ca

Here now they say, 'How is it that that (gold) man is not held (weighed) down by the naturally-perforated (brick)?' Well, the naturally-perforated (brick) is food and breath; and man is not held down either by food or by his breath.